Xin Metal Day Master (辛): the Yin Metal stem in BaZi
Last checked · verse from the Di Tian Sui on Chinese Wikisource; tables calculated
辛 (Xin) is the eighth Heavenly Stem, the yin partner of 庚 Geng in metal. The Di Tian Sui opens its verse with "Xin metal is soft and weak, warm, moist and clear", and its annotation describes Xin as yin metal: not jewels or jade, simply warm, soft, clear and moist.
Stem
辛 Xin
Element and polarity
Yin Metal
Combines with
丙 Bing (Water)
Clashes with
乙 Yi
The Xin verse in the Di Tian Sui (滴天髓)
Verse traditionally attributed to Jingtu (京圖), with the annotation attributed to Liu Ji (劉基, Ming dynasty); quoted from Chinese Wikisource. The translation is ours.
辛金軟弱，溫潤而清，畏土之疊，樂水之盈，能扶社稷，能救生靈，熱則喜母，寒則喜丁。
Xin metal is soft and weak, warm, moist and clear. It dreads piled-up earth and delights in abundant water. It can uphold the state and rescue living beings. In heat it welcomes its mother; in cold it welcomes Ding.
The verse uses human words (kind, loyal, filial) for how the stems act on one another in a chart; it does not describe people.
What the annotation says
Xin is yin metal, not jewels and jade but simply warm and soft. Much Wu earth buries it; much Ren water makes it shine. As Bing's minister it cares for Ren water so that Ren does not attack Bing fire; as Jia's lord it combines with Bing so that fire does not burn Jia. Born in summer it wants Ji earth to shade the fire; born in deep winter it wants Ding fire against the cold.
The annotation opens with 「辛乃陰金，非珠玉之謂，特溫柔清潤耳」 (yin metal: not jewels or jade, simply warm, soft, clear and moist). Summarized in our words from the annotation on the same 天干論 page on Wikisource.
Metal in the Huainanzi (淮南子)
The Huainanzi, 天文訓 chapter, lists each direction with its element, season, planet and animal, and ends with the two stems of its days.
西方，金也……執矩而治秋。其神為太白，其獸白虎，其音商，其日庚辛。
Direction: West · Season: Autumn · Planet: Venus (太白) · Animal: White Tiger (白虎) · Note: shang (商)
Ten Gods for a Xin Metal Day Master
What each of the ten stems is called, seen from this Day Master.
| Stem | Element | Ten God | Chinese |
|---|---|---|---|
| 甲 Jia | Yang Wood | Direct Wealth | 正财 Zheng Cai |
| 乙 Yi | Yin Wood | Indirect Wealth | 偏财 Pian Cai |
| 丙 Bing | Yang Fire | Direct Officer | 正官 Zheng Guan |
| 丁 Ding | Yin Fire | Seven Killings | 七杀 Qi Sha |
| 戊 Wu | Yang Earth | Direct Resource | 正印 Zheng Yin |
| 己 Ji | Yin Earth | Indirect Resource | 偏印 Pian Yin |
| 庚 Geng | Yang Metal | Rob Wealth | 劫财 Jie Cai |
| 辛 Xin | Yin Metal | Friend | 比肩 Bi Jian |
| 壬 Ren | Yang Water | Hurting Officer | 伤官 Shang Guan |
| 癸 Gui | Yin Water | Eating God | 食神 Shi Shen |
Twelve stages of Xin (长生十二宫)
A yin stem runs backward through the branches from its Growth stage.
| Branch | Animal | Stage |
|---|---|---|
| 子 Zi | Rat | 长生 Growth |
| 亥 Hai | Pig | 沐浴 Bath |
| 戌 Xu | Dog | 冠带 Cap and Belt |
| 酉 You | Rooster | 临官 Taking Office |
| 申 Shen | Monkey | 帝旺 Prosperity |
| 未 Wei | Goat | 衰 Decline |
| 午 Wu | Horse | 病 Sickness |
| 巳 Si | Snake | 死 Death |
| 辰 Chen | Dragon | 墓 Tomb |
| 卯 Mao | Rabbit | 绝 Extinction |
| 寅 Yin | Tiger | 胎 Conception |
| 丑 Chou | Ox | 养 Nurture |
The six Xin day pillars
Xin pairs only with the yin branches, so it appears in six of the sixty pillars.
| Pillar | No. in the cycle | Na Yin | Void branches |
|---|---|---|---|
| 辛未 Xin Wei | 8 | 路旁土 Roadside Earth | 戌亥 |
| 辛巳 Xin Si | 18 | 白蜡金 White Wax Metal | 申酉 |
| 辛卯 Xin Mao | 28 | 松柏木 Pine and Cypress Wood | 午未 |
| 辛丑 Xin Chou | 38 | 壁上土 Earthen Wall Earth | 辰巳 |
| 辛亥 Xin Hai | 48 | 钗钏金 Hairpin Metal | 寅卯 |
| 辛酉 Xin You | 58 | 石榴木 Pomegranate Wood | 子丑 |
Xin is also a hidden stem in 丑 Chou, 酉 You (as the main stem) and 戌 Xu.
Next Xin days
China Standard Time dates; one day in every ten.
- Oct 24, 2026 · 辛未
- Nov 3, 2026 · 辛巳
- Nov 13, 2026 · 辛卯
- Nov 23, 2026 · 辛丑
- Dec 3, 2026 · 辛亥
- Dec 13, 2026 · 辛酉
FAQ
How do I find out if my Day Master is Xin Metal?
Your Day Master is the stem of your day pillar. Enter your birth date, time and time zone in the BaZi calculator; if the day pillar starts with 辛, your Day Master is Xin.
What is a Xin Metal Day Master?
A BaZi chart whose day pillar has 辛 (Xin) as its stem. Xin is the eighth of the ten Heavenly Stems, the yin stem of metal. The Di Tian Sui annotation describes it as yin metal: not jewels or jade, simply warm, soft, clear and moist (辛乃陰金，非珠玉之謂，特溫柔清潤耳).
What is the difference between Xin and Geng?
Both are metal. Xin (辛) is the yin stem and Geng (庚) the yang one. The Di Tian Sui annotation describes Xin as yin metal: not jewels or jade, simply warm, soft, clear and moist and Geng as yang metal, the essence of Venus. Xin combines with Bing and Geng with Yi.
Which stem combines with Xin, and which clashes with it?
Xin combines with 丙 Bing (the 丙辛 combination, associated with Water). It clashes with 乙 Yi.
How common is a Xin Day Master?
The day stems repeat every ten days without a break, so exactly one day in ten is a Xin day. The next ones are Oct 24, 2026, Nov 3, 2026, Nov 13, 2026 (China Standard Time dates).
Where does Xin sit in the twelve stages?
In the usual twelve-stage table, Xin has its Chang Sheng (Growth) in 子 Zi and its Di Wang (Prosperity) in 申 Shen; as a yin stem it moves backward through the branches.
Other Day Masters
Sources: 滴天髓 (Di Tian Sui), 天干論, on Chinese Wikisource; 淮南子 (Huainanzi), 天文訓, on Chinese Wikisource; Ten God names as in 淵海子平 (Yuan Hai Zi Ping) on Chinese Wikisource. This page describes the traditional system and quotes classical texts; it is not a character reading, a prediction or advice. Terms are given in simplified characters; quotations keep the script of their source. Day pillars: how they are calculated and checked.