Birth (Chang Sheng) in Bazi: Reading the First Growth Phase

一 What it is

Think of a garden calendar. It lists stages such as seed, sprout, flower, and fruit. The label tells you where a plant sits in a repeating cycle, not how tall it will grow or whether it will thrive. Birth works the same way in Bazi. It is the first named phase in the Twelve Growth Phase cycle for a given stem.

Birth, often called Chang Sheng, is a symbolic lookup label. You find it by matching a stem to a branch through a fixed table. It is not a literal birth event, and it does not describe a person being born. It is not a claim about vitality, age, or health. It is not a forecast of anything that will happen.

The boundary matters. Birth is one of twelve labels that repeat in order. Each stem has its own sequence, so the same branch can carry different phase labels for different stems. The label simply marks a position in that sequence.

When you see Birth in a chart, treat it as a reference point. It tells you which phase the stem occupies relative to a branch. It does not say the stem is strong, active, or fortunate. It does not say the person is young or healthy. It is a naming convention inside a larger cycle, useful for organizing what you observe, and nothing more than that.

二 Where to find it in your chart

Reading Birth in the Four Pillars

In the "Your Four Pillars" grid, note the Day Master (top Day stem) and each branch below its stem. Hidden stems appear as small characters; our tables supply their full Ten-God labels. The "Element balance" panel shows weighted totals, and "Day Master strength" gives a weak/balanced/strong verdict with score, season, support, drain and climate need when present. There is no dedicated twelve-phase row, so copy your reference stem and target branch, then use this article's table.

Birth (Chang Sheng) is phase zero of a stem-specific cycle, traditionally emergence or beginning. The ten Birth mappings are: Jia-Hai, Yi-Wu, Bing/Wu-Yin, Ding/Ji-You, Geng-Si, Xin-Zi, Ren-Shen, Gui-Mao, following yang-forward, yin-reverse, Earth with Fire.

Birth is not automatically a root: Geng Birth Si hides Geng, but Xin Birth Zi hides Gui, not Xin. Rooting and phase are separate questions. In chart A, Jia has no Jia Birth among Wu, Si, Xu, Si; hidden Geng has Birth at Si but is not the Day Master. In chart B, month Hai is Jia Birth and hides Jia, while day Shen is Jia Extinction, so one chart can carry different phase labels by position. Known birth time is recommended; with an unknown hour, treat any placeholder-derived score as incomplete. To test a reference stem against a branch, calculate your chart and compare positions.

三 How to read it

How to Read Birth (Chang Sheng)

Birth (Chang Sheng) is phase zero of a stem-specific cycle: the point where a stem is said to emerge, like a seed sprouting. Each of the ten stems has one fixed Birth branch. Yang stems count forward through the twelve phases, yin stems count in reverse, and Earth follows Fire, so Wu shares Bing's cycle and Ji shares Ding's. That gives the ten mappings: Jia Birth Hai, Yi Birth Wu, Bing and Wu Birth Yin, Ding and Ji Birth You, Geng Birth Si, Xin Birth Zi, Ren Birth Shen, Gui Birth Mao.

Match One Stem to One Branch

To read it, take one stem and one branch, then ask whether that branch is the stem's Birth branch. In the chart 庚午 / 辛巳 / 甲戌 / 己巳, the Day Master is Jia, and its Birth branch is Hai. No Hai appears, so Jia shows no Birth phase here; its day branch Xu instead gives Gestation. The same method applies to every visible stem: Geng in the year sits on Wu, not Si, so Geng is not at Birth either. Work stem by stem rather than scanning the whole grid at once.

Birth Is Not the Same as a Root

Birth is not automatically a root. Geng Birth Si, and Si does hide Geng, so that pairing can root. Xin Birth Zi, but Zi hides Gui, not Xin, so Xin gains no root there. Rooting and phase are separate questions: one asks whether a stem has support in a branch, the other labels the stage of its cycle. Keep them apart when you read, and check the hidden stems before assuming a Birth branch strengthens its stem.

Position Changes the Label

Position matters. In 庚午 / 丁亥 / 甲申 / 己巳, the month branch Hai is Jia's Birth branch and also hides Jia as a Friend. The day branch Shen is Jia's Extinction. One chart, one Day Master, two different phase labels depending on which pillar you read. Several phases can coexist, so name the stem and branch you are judging before you interpret. A pillar stem can also differ from the Day Master: in the first chart, Ji in the hour sits on Si, giving Ji Emperor while Jia on the same branch shows Sickness.

Repeat the Same Lookup

For the full sequence, see Twelve Growth Phases. Then repeat the same lookup for each stem-branch pair: identify the stem, find its Birth branch, count forward or backward to the branch present, and record the phase. Treat the label as a description of position in the cycle, not a prediction about a person. One limitation: a phase label alone does not settle strength, because season, roots, and the other pillars still shape the reading.

四 When the reading changes

Birth on a visible stem

Check each visible stem against its own branch using the Birth map: Jia–Hai, Yi–Wu, Bing/Wu–Yin, Ding/Ji–You, Geng–Si, Xin–Zi, Ren–Shen, Gui–Mao. The direction follows yang-forward, yin-reverse, with Earth following Fire. In the chart 庚午 / 辛巳 / 甲戌 / 己巳, the hour stem 己 sits on 巳, not 酉, so 己 is not at Birth there; its pillar stem phase is Emperor. The year stem 庚 on 午 is Bath, not Birth, because Geng's Birth branch is 巳. A match means only that the stem occupies phase zero of its own cycle — a lookup result, not a claim about the person. Birth is symbolic emergence, the first stirring of a stem's cycle, not a statement about infancy, vitality, or events.

Birth on a hidden stem

Hidden stems carry their own phase labels. In 庚午 / 丁亥 / 甲申 / 己巳, the month branch 亥 hides 壬 (weight 1) and 甲 (weight 0.5). 甲's Birth branch is 亥, so the hidden 甲 holds Birth; 壬's Birth branch is 申, so 壬 does not. Weights 1, .5, .3 are calculator conventions, not a universal strength scale. Note also that Birth is not automatically a root: Geng is at Birth in 巳, and 巳 does hide Geng, but Xin is at Birth in 子 while 子 hides Gui, not Xin. Rooting and Birth are separate questions, so a Birth label alone does not confirm support. Read the hidden list, note each stem's own Birth branch, and record the match without inferring influence.

Birth on the Day Master

Read the Day column stem and branch together. In 庚午 / 丁亥 / 甲申 / 己巳, the Day Master 甲 sits on 申, giving Extinction (Jue), not Birth. The same Day Master is at Birth relative to the month branch 亥. Both statements name a reference stem and a target branch; neither is a chart-wide label. For a worked single-stem example, see Jia Wood Day Master. A Day Master at Birth occupies phase zero relative to the selected branch; at Extinction it occupies phase nine when counting from zero. Neither label predicts personality, health, or events.

Birth in more than one column

List every column with a reference stem, target branch and phase. In 庚午 / 辛巳 / 甲戌 / 己巳, no visible stem is at Birth on its own branch; the Day Master 甲 on 戌 is Gestation (Yang). With Jia held as the reference, Chart B has one Birth match, at the month branch 亥. If you also test hidden stems against their containing branches, additional matches appear: 壬 at 申 and 庚 at 巳 are both Birth. These are separate counts. A new reference stem can change a branch's phase: 丁 at 亥 is Conception, while 甲 at 亥 is Birth. State which kind of match you are counting before comparing charts.

五 Worked chart examples

Both calendar-screened teaching charts use Jia Wood as the Day Master. They illustrate contrasting placements and do not represent client histories.

Reading Chart A: 庚午 · 辛巳 · 甲戌 · 己巳

Chart A has four pillars: 庚午 in the Year, 辛巳 in the Month, 甲戌 in the Day, and 己巳 in the Hour. The Day Master is 甲. Its branches, read left to right, are 午, 巳, 戌 and 巳.

For 甲, Birth (Chang Sheng) falls at 亥. No 亥 appears in Chart A, so none of its four branches gives the Jia Day Master a Birth match. The Day Master phase row instead reads Death at 午, Sickness at 巳, Gestation at 戌 and Sickness at the second 巳. Those results use the same reference stem throughout.

Change the reference to 庚 and the same 巳 branch gives Birth. The month and hour 巳 branches both contain hidden 庚, so these are two Birth matches for that hidden stem against its containing branch. The visible Year stem 庚 can also be compared with those branches, although its own branch 午 gives Bath. This distinction is why a statement such as “there is no Birth in this chart” needs a named reference.

Birth and root are separate checks. 庚 at 巳 has both a Birth phase and a same-stem presence inside the branch. By contrast, 辛 at 子 would be Birth even though 子 hides 癸, not a Metal stem. That second pair is a lookup comparison, not an additional pillar in Chart A.

The hidden weight of 庚 in 巳 is 0.5 in the element tally. That number does not change its phase. Record the reference stem, branch and column before comparing a phase with any weighted total.

Chart B: Same Day Master, Different Branches

Chart B uses 庚午, 丁亥, 甲申, 己巳, with 甲 as the Day Master. Its month branch 亥 is 甲's Birth (Chang Sheng) and hides 壬 and 甲, so the month pillar carries both a phase label and a root for the Day Master. Its day branch 申 is 甲's Extinction (Jue) and hides 庚, 壬, and 戊. The same Day Master therefore meets Birth in one position and Extinction in another, which is why position matters when reading a phase.

Comparing Chart A and Chart B

Chart A, by contrast, has 甲戌 in the day pillar, where 戌 is 甲's Gestation (Yang), and its month branch 巳 is 甲's Sickness (Bing). Comparing A and B shows that changing a branch changes the phase label even when the Day Master stays 甲. Read each branch against the Day Master separately; do not assume one label describes the whole chart.

Birth Is Not Rooting

Birth is not the same as rooting. 甲 Birth at 亥 happens to hide 甲, but 庚 Birth at 巳 hides 庚, 丙, and 戊, and 辛 Birth at 子 hides 癸, not 辛. Rooting and phase answer different questions, so check hidden stems before treating Birth as support. The Earthly Branches carry both the phase label and the hidden stems, so read them together rather than as one signal.

Reader Check

Reader check: identify the Day Master, find its Birth branch, then compare that branch with every other branch in the chart. Note where Birth, Extinction, or another phase appears, and whether the branch also hides a root. This keeps phase reading separate from strength scoring.

六 What this comparison can tell you

The lookup used here advances for Yang stems, reverses for Yin stems and places Earth with Fire. Each of its ten stem rows assigns one phase to each of twelve branches. Birth therefore occupies ten of the 120 stem–branch lookup cells. That is a property of the lookup table, not a birth-population rate or the proportion of whole charts containing Birth. Translations of the phase names vary, so keep the Chinese name and reference stem in your notes.