The 24 Solar Terms & Feng Shui: 24 Mountains Matching Solar Terms, Winter Solstice Summer Solstice Spring Equinox Autumn Equinox Feng Shui Meaning, Moving and Renovation Taboos, Three Cycles Nine Periods Connection • TIMEACTOR

Solar Terms — The Feng Shui Master's Time Clock. When to Move. When to Stop. Written Across 24 Nodes.

Feng shui is the art of space. But space does not change on its own. What changes is time. And time, in feng shui, is marked by the 24 Solar Terms.

The 24 Solar Terms and feng shui are more tightly connected than you think. The Luo Pan's 24 Mountains and the 24 Solar Terms match one-to-one. Zi sits at due North, matching the Winter Solstice. Wu sits at due South, matching the Summer Solstice. Mao sits at due East, matching the Spring Equinox. You sits at due West, matching the Autumn Equinox. This is not coincidence. The very logic behind the 24 Mountains is the path the heavens' qi takes through a year. The sun travels the ecliptic in one circuit (a tropical year), passing through 24 key positions. Each position is a solar term. Those 24 positions projected onto the ground become the 24 Mountains. On the Winter Solstice, the sun is at its southernmost point (Tropic of Capricorn), corresponding to the Earth Plate's Zi mountain (due North). On the Summer Solstice, the sun is at its northernmost point (Tropic of Cancer), corresponding to the Earth Plate's Wu mountain (due South). On the Spring and Autumn Equinoxes, the sun is on the equator — corresponding to Mao mountain (due East) and You mountain (due West). So each mountain on the Luo Pan has a matching solar term. Unfold a Luo Pan and you hold a yearly calendar. The core function of solar terms in feng shui: they tell you when you can break ground and when you cannot. When qi is rising. When qi is falling. The Three Cycles Nine Periods — this vast time cycle — its underlying rhythm is a scaled-up version of the solar term rhythm. Each period is 20 years, an exact integer multiple of the solar term cycle.

Remember just four solar terms: Winter Solstice (first yang is born — best for quiet rest). Summer Solstice (first yin is born — guard against overheating). Spring Equinox (yin and yang balance — all things sprout — best for launching new projects). Autumn Equinox (yin and yang balance again — all things contract — best for closing and settling accounts). For moving house, prefer the window after Spring Equinox and before Autumn Equinox. For renovation, avoid the week before and after the Winter and Summer Solstices. For ground-breaking, absolutely avoid the 'Tu Wang Yong Shi' days (the 18 days before each of Li Chun, Li Xia, Li Qiu, Li Dong).

1. The 24 Mountains and 24 Solar Terms — The Luo Pan Is a Yearly Calendar

The 24 Mountains are the core layer of the Luo Pan. The full 360° circle is cut into 24 slices, each 15°. The 24 names: Zi, Gui, Chou, Gen, Yin, Jia, Mao, Yi, Chen, Xun, Si, Bing, Wu, Ding, Wei, Kun, Shen, Geng, You, Xin, Xu, Qian, Hai, Ren. The 24 Solar Terms are also exactly 24: Winter Solstice, Minor Cold, Major Cold, Spring Begins (Li Chun), Rain Water, Awakening of Insects, Spring Equinox, Clear and Bright, Grain Rain, Summer Begins (Li Xia), Grain Full, Grain in Ear, Summer Solstice, Minor Heat, Major Heat, Autumn Begins (Li Qiu), Limit of Heat, White Dew, Autumn Equinox, Cold Dew, Frost Descent, Winter Begins (Li Dong), Minor Snow, Major Snow. The correspondence is direct. Zi sits at due North. Its solar term is the Winter Solstice. The Winter Solstice is the moment the sun reaches the Tropic of Capricorn — the shortest day of the year. Yang qi drops to its lowest point on this day, then begins to rise (Winter Solstice births the first yang). Wu sits at due South. Its solar term is the Summer Solstice. The Summer Solstice is when the sun reaches the Tropic of Cancer — the longest day of the year. Yang qi peaks, then begins to decline (Summer Solstice births the first yin). Mao sits at due East. Its solar term is the Spring Equinox. You sits at due West. Its solar term is the Autumn Equinox. On the two equinoxes, yin and yang balance — day length equals night length. The 24 Mountains and 24 Solar Terms are a strict one-to-one match. Stand at any solar term and look at the Luo Pan: the direction with the strongest energy at that moment is the mountain matching that term. Spring Equinox day, Mao hour — the due-East direction's energy peaks (Mao mountain commands). Winter Solstice day, Zi hour — the due-North direction's energy peaks (Zi mountain commands). The Luo Pan is a yearly calendar. Ancient people compressed time into space.

2. The Two Equinoxes and Two Solstices — These Four Solar Terms Determine the Year's Entire Qi Cycle

The Spring Equinox, Autumn Equinox, Summer Solstice, and Winter Solstice — the two equinoxes and two solstices — are the four anchor points of the 24 Solar Terms. Winter Solstice: the first yang is born. Yang qi starts rising from zero. The period around the Winter Solstice is the coldest (yang qi is still underground, not yet emerged). On Winter Solstice day, suit quiet rest — no ground-breaking, no moving, no renovation. After the Winter Solstice, yang qi rises day by day. A feng shui master can start work after this day. Summer Solstice: the first yin is born. Yin qi starts rising from zero. The period around the Summer Solstice is the hottest. On Summer Solstice day, yang qi hits the peak — then begins weakening. The period around the Summer Solstice is likewise unsuitable for major projects — qi is at the extreme-to-decline turning point and is unstable. After the Summer Solstice, yin qi slowly rises — suitable for wrapping things up, settling accounts, organizing. Spring Equinox: the day yin and yang balance. After the Spring Equinox, yang qi overtakes yin qi — all things sprout. The Spring Equinox opens the optimal time window for 'movement' in feng shui. After the Spring Equinox, it's suitable for moving house, opening a business, launching new projects. Qi is on an upward path. Autumn Equinox: the day yin and yang balance again. After the Autumn Equinox, yin qi overtakes yang qi — all things contract. After the Autumn Equinox, suitable for closing accounts, settling debts, moving house (before it gets completely cold). The two equinoxes and two solstices also correspond to home directions. On Winter Solstice day, Zi mountain's energy peaks. On that day, sit quietly or meditate in the Zi mountain direction (due North). Borrow the heaven-and-earth newborn yang qi to nourish your own primordial energy. On Summer Solstice day, Wu mountain (due South) energy peaks. At noon that day, stand for a while by a south-facing window or balcony. Absorb the peak yang qi.

3. How Solar Terms Affect Moving, Renovation, and Ground-Breaking — Some Days You Just Don't Touch Anything

Moving house. Best moving time: the period after the Spring Equinox until before the Summer Solstice (yang qi rising path). Or the period after the Autumn Equinox until before Winter Begins (clear autumn air, qi stable). Times to avoid: the week before and after the Winter Solstice (qi too weak). The week before and after the Summer Solstice (qi at extreme peak turning to decline — unstable). Qing Ming Festival (ghost gate opens — unsuitable for moving). Zhong Yuan Festival (7th month 15th day — unsuitable for moving). Renovation. Renovation means major work — tearing down walls, redoing plumbing and electrical, laying floors. These actions disturb the home's qi. Best renovation time: after Spring Begins (Li Chun) until before the Summer Solstice. Or after Autumn Begins (Li Qiu) until before Winter Begins (Li Dong). Avoid: the week before and after the Winter and Summer Solstices. Also, renovate outside of the 'San Fu' period (the hottest days of summer) — the heat exhausts the workers and drains your qi too. Ground-breaking. Ground-breaking demands the most caution in feng shui. This refers to building a house, digging foundations, expanding — actions that substantively disturb the earth. The biggest ground-breaking taboo is 'Tu Wang Yong Shi' — the 18 days before each of the four season-beginning terms: Li Chun (Spring Begins), Li Xia (Summer Begins), Li Qiu (Autumn Begins), Li Dong (Winter Begins). These 18 days are when the Earth energy commands. The earth is 'in charge.' Breaking ground during these days = fighting the earth itself. You commit an Earth Sha. Mild cases: worksite accidents. Severe cases: personal injury. Before breaking ground, check the almanac. Avoid Tu Wang Yong Shi days. The 24 Solar Terms also include the 'Four Separations and Four Severances' days — the day before the Spring Equinox, Autumn Equinox, Summer Solstice, and Winter Solstice are the 'Four Separations.' The day before Li Chun, Li Xia, Li Qiu, and Li Dong are the 'Four Severances.' These eight days are also unsuitable for ground-breaking. Summary: for moving, choose the rising path (after Spring Equinox, after Autumn Equinox). For renovation, avoid the extreme-peak and extreme-trough turning points (Summer Solstice, Winter Solstice). For ground-breaking, always check Tu Wang Yong Shi and the Four Separations and Four Severances.

4. The Three Cycles Nine Periods and the Solar Terms — Large Cycles Nested Within Small Cycles

The Three Cycles Nine Periods is feng shui's largest time cycle — one Upper-Middle-Lower cycle is 180 years. Three Cycles divided into Nine Periods, each period 20 years. The 24 Solar Terms is a one-year cycle. The relationship between large and small cycles: the underlying rhythm of the Three Cycles Nine Periods shares the same structure as the 24 Solar Terms. Both derive from the sun's movement pattern. Each of the nine periods (20 years) can be analogized to a season. Period 9 (2024–2043) is Li Fire period — Li Fire belongs to Fire. Its matching solar term is around the Summer Solstice — Fire qi commands. Returning to the solar term logic: at the Summer Solstice, Li Fire is strongest. During these 20 years, the South (Li trigram, Fire) is the Zheng Shen direction — suited to have mountains. The North (Kan trigram, Water) is the Ling Shen direction — suited to have water. This spatial layout is what the 'period' dictates. The solar terms give one year's worth of guidance — e.g., after the Spring Equinox, it's good to start work. The period gives 20 years' worth — e.g., during Period 9, the South likes mountains, not water. The two don't conflict. The period is the broad backdrop. The solar terms are the fine rhythm points. Practical use: you want to renovate now. First, check which period you're in (Period 9 Li Fire). Period 9 Fire is strong — renovation color palette can lean warm (beige, light orange, warm wood). Then check which solar term you're in now. If it's after the Spring Equinox — suitable to begin work. If it's after the Winter Solstice — wait a bit longer. The period tells you 'what's the 20-year big direction.' The solar term tells you 'can I move this month.' Use both dimensions together. During Period 9's 20-year span, each year's Tai Sui and the solar terms also stack their influence. Whichever trigram position that year's 5 Yellow and 2 Black fly to — the time segment around the solar term matching that trigram position needs extra caution.

5. Solar Term Entry Level — Remember Four Key Time Points. That's Enough.

You don't need to memorize the full table of 24 Solar Terms. Remember four: the Spring Equinox (around March 20), Summer Solstice (around June 21), Autumn Equinox (around September 22), Winter Solstice (around December 21). These four are the turning points of heaven-and-earth qi. About one week before and after each point, qi is in transition. Transition-period qi is unstable. So during the week before and after these four points — don't make big decisions. Don't move house. Don't sign contracts. After the week passes and qi stabilizes, then move. The week around the Winter Solstice — best for quiet rest. No unnecessary activity. Wrap up whatever needs wrapping this year. The week around the Summer Solstice — best for slowing down. No charging ahead. Sort through the first half of the year's matters. After the Spring Equinox — get moving. New projects and new plans launched after the Spring Equinox flow most smoothly. After the Autumn Equinox — wrap up and prepare. This doesn't mean you can't move. It means move with direction. Don't flail aimlessly. Beyond these four, there are four more 'Si Li' days: Li Chun (Spring Begins, around February 4), Li Xia (Summer Begins, around May 5), Li Qiu (Autumn Begins, around August 7), Li Dong (Winter Begins, around November 7). These four mark the start of each season. After Li Chun — suitable for laying out the year's plan. After Li Xia — suitable for accelerating execution. After Li Qiu — suitable for review and adjustment. After Li Dong — suitable for storing reserves. Eight time points (two equinoxes + two solstices + four seasonal beginnings). Save them to your phone calendar. Set annual automatic reminders.

Multi-Dimensional Breakdown

Career & Wealth

Solar terms judge wealth and career through two anchor points — the Winter Solstice and the Spring Equinox. Winter Solstice births yang — yang qi begins rising from zero. After the Winter Solstice, your wealth trajectory follows the yang qi. If finances feel tight around the Winter Solstice — this is normal. When yang qi is weakest, wealth energy is also weakest. After the Winter Solstice, things slowly improve. Around the Spring Equinox, yang qi for the first time fully overtakes yin qi — the Spring Equinox and onward is the best window to launch wealth-building activity for the year. New business, new investments, new projects — plant them after the Spring Equinox. Ride the yang qi's rising rhythm. Summer Solstice — yang qi peaks. Around the Summer Solstice, wealth hits a high point. After the peak comes the decline (yin qi begins rising). The Summer Solstice period suits settlement, dividends, collecting accounts. After the Autumn Equinox, yin qi overtakes yang qi — wealth enters the contraction phase. Suit conservative operations. At the Three Cycles Nine Periods level — we are now in Period 9 Li Fire (2024–2043). Fire period + Summer Solstice overlap — during Period 9 (especially around the Summer Solstice each year), Fire-attribute industries (energy, tech, content creation, entertainment) see doubled wealth energy. Water-attribute industries (logistics, trade, aquaculture) get conquered by Fire during the Fire period — need Wood as a bridge (Water births Wood, Wood births Fire — Fire no longer directly conquers Water).

Love & Relationship

Solar terms affect relationships through the Spring and Autumn Equinoxes. The Spring Equinox is the yin-yang balance point — the period around the Spring Equinox is the best time in the natural cycle for relationship reconciliation. If you and your partner have conflict — find time to sit down and talk during the week after the Spring Equinox. The qi during this period is balanced. Negotiation yields results more easily. The Autumn Equinox is also a yin-yang balance point — the period around the Autumn Equinox suits relationship review. The year is almost over. What went well in the relationship? What needs adjusting? The week after the Autumn Equinox is the review window. The Summer Solstice is the day of peak yang qi — yang represents the masculine. Around the Summer Solstice, male energy is strong. Men in relationships are prone to taking initiative but also prone to impulsive overreach. The Winter Solstice is the day of peak yin qi — yin represents the feminine. Around the Winter Solstice, female energy is strong. Women in relationships are more sensitive but prone to overthinking. The four seasonal beginnings — the period around Li Chun (Spring Begins) suits starting new relationships. Around Li Qiu (Autumn Begins) suits ending old relationships (or giving a stale relationship a clean break and restart).

Personality

The solar term at your birth influences your underlying personality tone. People born around the Winter Solstice — born when yang qi is weakest. Personality leans inward, deep, resilient. Like a winter seed — quietly building strength underground. These people lack explosive drive but have exceptional endurance. People born around the Summer Solstice — born when yang qi peaks. Personality leans outward, warm, action-driven. But prone to running out of steam — after the peak comes decline. These people charge fast but need to learn how to pull back. People born around the Spring Equinox — born at the yin-yang balance point. Personality leans balanced and moderate, good at coordination. These people have natural equilibrium but sometimes lack decisiveness. People born around the Autumn Equinox — born at the second yin-yang balance point. Personality leans rational and restrained, good at wrapping up and concluding. These people finish what they start but may overthink consequences. Solar terms are not destiny — only the 'factory settings' at birth. Postnatal environment (which direction you live in, which trigram position you spend time in) can adjust it. A Winter Solstice–born person living in the Li trigram position (South, Fire) — supplements their innate yang deficiency. A Summer Solstice–born person living in the Kan trigram position (North, Water) — Water cools the Fire.

Health

Solar terms' impact on health has a basis in Traditional Chinese Medicine. The 24 Solar Terms correspond to the peak operating periods of the body's 24 meridians. Winter Solstice corresponds to the Kidney meridian — the week around the Winter Solstice, nourish the kidneys. Sleep early, rise late. Avoid cold and raw foods. Summer Solstice corresponds to the Heart meridian — the week around the Summer Solstice, nourish the heart. Take a half-hour nap at noon. No rushing, no overexposure to sun. Spring Equinox corresponds to the Liver meridian — the week around the Spring Equinox, nourish the liver. Don't stay up late. Eat more green vegetables. Keep emotions steady (anger injures the liver). Autumn Equinox corresponds to the Lung meridian — the week around the Autumn Equinox, nourish the lungs. Drink more water. Guard against dryness. Eat less spicy food. The four seasonal beginnings also each have their correspondences — Li Chun nourishes the liver, Li Xia nourishes the heart, Li Qiu nourishes the lungs, Li Dong nourishes the kidneys. Solar-term health cultivation shares the same logic as feng shui — align your body's rhythm with heaven-and-earth qi. Living against the solar term rhythm (e.g., staying up late during the Winter Solstice, overexposing to sun during the Summer Solstice) — doubles the body's consumption. Feng shui adjustments work best at solar-term transition points — adjust home directional layouts around the Spring and Autumn Equinoxes (because qi is in transition, old patterns loosen, new patterns insert more easily). Do not make major adjustments around the Winter and Summer Solstices — qi sits at extremes. Adjusting wrong at extremes easily backfires.

Classical Support

Practical Ground-Level Points

Build a Full-Year Feng Shui Calendar Against Your Phone Calendar — Mark Eight Solar Terms in Red: Steps: ① Open your phone calendar. ② Search the 2026 solar term table — Spring Equinox March 20, Summer Solstice June 21, Autumn Equinox September 23, Winter Solstice December 22 (dates shift a day or two each year). Mark the four equinox-solstice days in red. ③ Search the four seasonal beginnings — Li Chun (Spring Begins) February 4, Li Xia (Summer Begins) May 5, Li Qiu (Autumn Begins) August 7, Li Dong (Winter Begins) November 7. Mark them in orange. ④ Add calendar notes: after Spring Equinox until before Summer Solstice = moving window. After Autumn Equinox until before Winter Begins = second moving window. The week around the Winter Solstice = no moving, no renovation. The week around the Summer Solstice = no moving, no renovation. The 18 days before Li Chun, Li Xia, Li Qiu, and Li Dong = Tu Wang Yong Shi. Do not break ground. ⑤ Sync to your phone's calendar reminders. For the entire year, you can judge the timing of major events yourself. No need to hire a feng shui master to check dates — just check your calendar.
Pick the Right Two-Hour Period on Moving Day Based on Solar Terms — Right Timing Doubles the Effect: Moving house depends not just on the solar term — the two-hour period (shi chen) on the day matters too. ① Ideally move in the morning half of the day. Morning yang qi rises — this resonates with the 'rising' mindset of moving into a new home. Moving in the afternoon, especially evening — not conducive to building the new home's yang qi. ② Specific two-hour periods — if moving after the Spring Equinox, choose Mao hour (5–7 AM) or Chen hour (7–9 AM). Mao is the mountain of the Spring Equinox. Moving during Mao hour after the Spring Equinox flows best. If moving before the Summer Solstice, choose Si hour (9–11 AM). Si belongs to Fire — the pre–Summer Solstice Fire qi helps burn your new home's energy field strong. If moving after the Autumn Equinox, choose You hour (5–7 PM). You is the mountain of the Autumn Equinox. Moving during You hour after the Autumn Equinox brings peace and stability to the home. If moving before Winter Begins, choose Shen hour (3–5 PM). Shen belongs to Metal — the pre–Winter Begins Metal qi contracts, suiting storage and settling in. ③ First thing after entering the door on moving day — open all windows. Let old qi exit and new qi enter. Regardless of season — windows open at least fifteen minutes. ④ On moving day: no arguing, no sighing, no complaining. The emotions on the first day in your new home become the home's initial qi field.

Common Questions

Q:I already signed the contract. The moving date is in winter — but you say don't move around the Winter Solstice. What do I do?

In real life, you often can't pick your dates — contracts are signed, landlords are pressing, work relocation locks the schedule. In this situation: ① Try to at least avoid the three days before and after the Winter Solstice and Summer Solstice. Three days is the qi transition window — dodge it and you're safe. ② If you absolutely cannot avoid the Winter Solstice day itself — enter the new home in the morning on moving day. After entering, don't unpack yet. Open ALL windows. Light a candle in the center of the living room (the longer-burning the better). Let the candle burn for at least half an hour. Fire is yang — use Fire qi to counteract the Winter Solstice's yin qi. ③ On a Winter Solstice moving day, bring more red items into the home — red couplets, red lanterns, red bedding. Red = Li Fire. Supplement yang qi. ④ If moving after the Winter Solstice — the first meal in the new home MUST involve the stove (use the gas burner). Stove fire is yang fire. It ignites the new home's yang qi. Turn the gas stove to high heat. Boil a pot of water — water boiling = qi moving. Use the boiled water to wipe down the stove — the Kitchen God takes his seat.

Q:What exactly is the relationship between the Three Cycles Nine Periods and the solar terms? It feels like the two dimensions are fighting each other.

They aren't fighting. The Three Cycles Nine Periods is a telephoto lens — see the 20-year big trend. The solar terms are a close-up lens — see this month's rhythm within this year. Example: we are now in Period 9 (2024–2043) Li Fire period — the South prospers. That's the telephoto conclusion. But specifically for this year's Winter Solstice — Winter Solstice births yang, yang qi is weakest, the week around the Winter Solstice is not suitable for ground-breaking. That's the close-up conclusion. Combine them: your house sits South faces North (Li house). During Period 9 overall, the outlook is good (telephoto bullish). But around this year's Winter Solstice, do not make any major changes to this house (close-up caution). The telephoto gives the big direction — decides whether you buy the house or not. The close-up gives the execution rhythm — decides when you move in, when you renovate. The two are the same yin-yang waxing-and-waning model at two different scales. The Three Cycles Nine Periods is the large-cycle yin-yang waxing and waning. The solar terms are the small-cycle yin-yang waxing and waning. Same algorithm. Different scale.