一 What it is
What Jie Sha and Wang Shen Are
劫煞 (Jie Sha, "Robbery Star") and 亡神 (Wang Shen, "Loss Star") are two symbolic markers in a Bazi chart. Each is found by taking a branch group from the Year or Day pillar and looking up a target branch, then scanning all four branches for a match. Think of it like a library call number: the Year or Day branch tells you which shelf to check, and the target tells you which book to look for. The names are traditional labels, not literal forecasts. Jie Sha does not mean a robbery will happen, and Wang Shen does not mean someone will die or fall ill. They describe tendencies in the chart's symbolic vocabulary: Jie Sha suggests disruption arriving from outside, while Wang Shen suggests erosion from within. A limitation worth noting: these stars are not strength scores, and their presence alone cannot diagnose a person or predict events. They are comparison markers, useful for seeing how two similarly named lookups can point to different branches. Neither should be confused with Jie Cai, the Rob Wealth Ten God, which is a separate concept entirely. For the underlying framework, see How to Read a Bazi Chart: A Step-by-Step Guide for Beginners.
二 Where to find it in your chart
Where to Look in the Calculator
Open the homepage calculator and enter the birth date, then the birth time if you know it. If the hour is unknown, select “I don’t know the hour”; do not invent a time, because the hour pillar would be fabricated. Submit the form and read the Four Pillars first: year, month, day, and hour, each with its stem and branch. The day stem is your Day Master; here every example uses Jia 甲.
Next, open the Stars in your chart panel. Find the exact labels Robbery Star for Jie Sha and Loss Star for Wang Shen. Read each basis line and hit list separately. Their targets are branch characters in the lower row of Four Pillars, not the visible or hidden stems above or beneath it.
For comparison topics such as Jie Sha 劫煞 versus Wang Shen 亡神, check BOTH labels independently. Each derives a target from the YEAR branch and from the DAY branch using triad groups, merges same-star targets, then scans all four branches. For 子辰申: Jie Sha 巳, Wang Shen 亥. For 寅午戌: 亥 and 巳. For 卯未亥: 申 and 寅. For 丑巳酉: 寅 and 申. Targets are opposite for the same basis, but when year and day fall in different triads the two stars may overlap on one slot; compare each star’s target list with the branch actually present before marking overlap.
Use the calculator at Bazi Calculator.
Robbery Star: triad of year Wei and day Shen → Day 申 (branch)
Loss Star: triad of year Wei and day Shen → Hour 亥 (branch)
三 How to read it
How the Jie Sha and Wang Shen lookup works
Start with the four pillars: Year, Month, Day, Hour. For 劫煞 Jie Sha and 亡神 Wang Shen, the basis is the branch in the Year pillar or the Day pillar, never the Month or Hour. Each basis branch belongs to a triad group, and that group supplies a target branch. The rule is year-and-day, so a Year basis and a Day basis are checked independently. When both bases yield the same star, their targets merge before you scan. The scan itself covers all four branches, so a Year-derived target can match the Day branch, and a Day-derived target can match the Year branch. Neither basis can target itself for these two stars.
Take 庚申 戊寅 甲子 己巳. The Year branch 申 and Day branch 子 both sit in the 子辰申 group. For 劫煞 the target is 巳, so both bases point to the Hour branch 巳: one hit, not two. For 亡神 the target is 亥, and no pillar carries 亥, so 亡神 is absent. Now take 己未 丁丑 甲申 乙亥. The Year branch 未 belongs to 卯未亥, giving 劫煞 申 and 亡神 寅; the Day branch 申 belongs to 子辰申, giving 劫煞 巳 and 亡神 亥. Keep the sets separate: Jie Sha targets 申 and 巳, while Wang Shen targets 寅 and 亥. Scanning all four branches finds 申 in the Day pillar and 亥 in the Hour pillar. The two stars land on different slots here, but when Year and Day fall in different triads their targets can coincide, so compare the two independently derived target sets before marking an overlapping position.
The Day Master 甲 Jia is the reference for ten-god interpretation, not for this star lookup. 劫煞 is not 劫财 Jie Cai, the Rob Wealth Ten God, even though the names resemble each other. Hidden stems contribute to weighted ten-god sums under the convention of positional weights 1.0, 0.5, and 0.3, with only the visible Day stem excluded; hidden 甲 still counts as Friend. Those sums are counts, not strength scores, and no star changes a total or diagnoses a person.
One limit: the birth time cannot be inferred from star counts, and these symbols describe traditional external disruption versus inward depletion, not theft, illness, accidents, death, mental health, or money outcomes. Read them as traditional interpretation, not measurement.
| Year or day branch group → target(s) | Target to locate |
|---|---|
| 子辰申 | 劫煞: 巳 / 亡神: 亥 |
| 丑巳酉 | 劫煞: 寅 / 亡神: 申 |
| 寅午戌 | 劫煞: 亥 / 亡神: 巳 |
| 卯未亥 | 劫煞: 申 / 亡神: 寅 |
四 When it plays out differently
When neither star lands anywhere
Start with the plainest variation: a chart can show no hit at all. Using the year-and-day rule, derive the 劫煞 Jie Sha target from the year branch triad and again from the day branch triad, then do the same for 亡神 Wang Shen, and scan all four branches. If none of the four branches equals any target, both stars are absent. Absence is a bounded statement about the lookup, not a verdict about the person. It simply means the configuration this rule describes is not present, so there is nothing to interpret under these two names.
When both bases point at one slot
Repeated hits are the next variation. Suppose the year branch and the day branch belong to the same triad, as in Chart B where year 申 and day 子 both fall in the 子辰申 group. Jie Sha's target is 巳 and Wang Shen's target is 亥. The year basis sends Jie Sha to 巳, and the day basis sends Jie Sha to 巳 as well, so the hour branch 巳 receives one hit from two bases, not two separate hits. Wang Shen's targets, 亥 from both bases, find nothing. One star can therefore land while its partner does not, and a single slot can carry a hit confirmed by two bases. To check this, list each basis separately before merging; merging too early hides which basis produced the hit.
When the two stars overlap on one slot
Because the targets are opposite for the same basis, overlap needs different triads. If the year branch sits in one group and the day branch in another, the year-derived target of one star can coincide with the day-derived target of the other. Compare the Year-derived target of each star with the Day-derived target of the other, and then check whether the shared target is actually present. When it does occur, the reading is a merged target, not a doubled force. The two symbols keep their separate senses — external sudden loss versus inward erosion — but they point at the same branch, so the positional emphasis is shared rather than stacked.
Jie Sha beside Jie Cai
Jie Sha is easily confused with 劫财 Jie Cai, the Rob Wealth Ten God. They are different lookups. Jie Cai is counted from the Day Master: for Jia 甲, Yi 乙 is Rob Wealth, and its weighted sum comes from visible non-day stems at 1.0 plus hidden stems at 1.0, 0.5, or 0.3. In Chart A the Rob Wealth total is 1.3, drawn from the visible Yi 1.0 in the hour stem plus the hidden Yi 0.3 in the year branch. Jie Sha, by contrast, is a branch-target lookup with no stem count at all. A chart can carry a larger Rob Wealth sum and no Jie Sha hit, or the reverse. Compare the two columns directly instead of treating one as evidence of the other.
Year basis versus day basis
Position matters even when the target is identical. In Chart B, year 申 and day 子 both belong to the 子辰申 group, so both bases send Jie Sha to 巳, and the hour branch 巳 receives one hit confirmed by two bases. Wang Shen's targets, 亥 from both bases, find nothing. The doubled basis is not twice as strong; it is the same slot confirmed by two independent bases. A hit from the year basis alone and a hit from the day basis alone describe the same branch but different origins, and the trace should record which basis fired. Read the slot, then read its source.
五 Worked chart examples
These teaching charts were screened from the calendar engine. They do not describe clients or claim life events. Tables and weights use the calculator’s rules.
| Position | year | month | day | hour |
|---|---|---|---|---|
| Stem | 己 | 丁 | 甲 | 乙 |
| Branch | 未 | 丑 | 申 | 亥 |
| Ten god | Direct Wealth | Hurting Officer | Day Master | Rob Wealth |
| Hidden stems | 己 Direct Wealth (1) 丁 Hurting Officer (0.5) 乙 Rob Wealth (0.3) |
己 Direct Wealth (1) 癸 Direct Resource (0.5) 辛 Direct Officer (0.3) |
庚 Seven Killings (1) 壬 Indirect Resource (0.5) 戊 Indirect Wealth (0.3) |
壬 Indirect Resource (1) 甲 Friend (0.5) |
Weighted ten-god totals (excluding only the visible Day Master stem): Direct Wealth 3.0; Hurting Officer 1.5; Rob Wealth 1.3; Direct Resource 0.5; Direct Officer 0.3; Seven Killings 1.0; Indirect Resource 1.5; Indirect Wealth 0.3; Friend 0.5.
Robbery Star: Day 申 (branch). Basis: triad of year Wei and day Shen.
Loss Star: Hour 亥 (branch). Basis: triad of year Wei and day Shen.
Chart A: 己未 · 丁丑 · 甲申 · 乙亥
This chart's 劫煞 (Jie Sha, Robbery Star) and 亡神 (Wang Shen, Loss Star) lookups both begin from the year branch 未 and the day branch 申. Those two branches belong to different triads — 未 sits in 卯未亥, while 申 sits in 子辰申 — so each basis is traced separately, and the same-star targets are then merged before scanning all four branches.
The lookup gives four lookups. From the year 未, 劫煞 targets 申 and 亡神 targets 寅. From the day 申, 劫煞 targets 巳 and 亡神 targets 亥. Scanning the four branches — 未, 丑, 申, 亥 — only two slots land: 劫煞 hits the day branch 申, and 亡神 hits the hour branch 亥. The 寅 and 巳 targets find nothing here. Note that the year-basis 劫煞 hit falls on the day branch itself; the visible day stem 甲 is excluded from ten-god counting, but hidden stems inside 申 still count.
Reading the visible and hidden stems under the 甲 Day Master: the hour stem 乙 is Rob Wealth, and 亥 hides 壬 (Indirect Resource) plus 甲 (Friend). The day branch 申 hides 庚 (Seven Killings), 壬 (Indirect Resource), and 戊 (Indirect Wealth). The month stem 丁 is Hurting Officer, while 丑 hides 己 (Direct Wealth), 癸 (Direct Resource), and 辛 (Direct Officer). The year stem 己 is Direct Wealth, and 未 hides 己, 丁, and 乙.
Three concrete relationships stand out. First, the 劫煞 slot 申 carries Seven Killings as its main hidden stem, so the external-disruption marker sits on a branch whose dominant hidden ten-god is 庚. Second, the 亡神 slot 亥 carries Indirect Resource and Friend, placing the inward-erosion marker on a resource-bearing branch. Third, 乙 Rob Wealth appears both as a visible hour stem and as a hidden stem in 未, so Rob Wealth registers in two locations rather than one. This chart's distinctive configuration is that both stars land on branches — day and hour — rather than on the year or month, and the two hits occupy different pillars.
| Position | year | month | day | hour |
|---|---|---|---|---|
| Stem | 庚 | 戊 | 甲 | 己 |
| Branch | 申 | 寅 | 子 | 巳 |
| Ten god | Seven Killings | Indirect Wealth | Day Master | Direct Wealth |
| Hidden stems | 庚 Seven Killings (1) 壬 Indirect Resource (0.5) 戊 Indirect Wealth (0.3) |
甲 Friend (1) 丙 Eating God (0.5) 戊 Indirect Wealth (0.3) |
癸 Direct Resource (1) | 丙 Eating God (1) 庚 Seven Killings (0.5) 戊 Indirect Wealth (0.3) |
Weighted ten-god totals (excluding only the visible Day Master stem): Seven Killings 2.5; Indirect Resource 0.5; Indirect Wealth 1.9; Friend 1.0; Eating God 1.5; Direct Resource 1.0; Direct Wealth 1.0.
Robbery Star: Hour 巳 (branch). Basis: triad of year Shen and day Zi.
Chart B (庚申 戊寅 甲子 己巳) keeps the same Jia 甲 Day Master but changes the year and day branches, so the 劫煞 Jie Sha and 亡神 Wang Shen lookups move. The year branch 申 Shen and day branch 子 Zi both belong to the 子辰申 triad. For that group, Jie Sha targets 巳 Si and Wang Shen targets 亥 Hai. Scanning all four branches, 巳 appears in the hour pillar, so Jie Sha registers once at the hour. No branch carries 亥, so Wang Shen has no hit. The lookup confirms this: year Shen and day Zi each point to 巳, and both point to 亥, but only 巳 is present. Because year and day share one triad, the two stars cannot overlap on a slot here; their targets are opposite.
Chart A (己未 丁丑 甲申 乙亥) splits its bases across triads. Year 未 Wei belongs to 卯未亥, giving Jie Sha target 申 and Wang Shen target 寅; day 申 Shen belongs to 子辰申, giving Jie Sha target 巳 and Wang Shen target 亥. The merged scan finds 申 at the day slot for Jie Sha and 亥 at the hour slot for Wang Shen. So Chart A shows both stars, while Chart B shows only Jie Sha. The feature that changed is the year and day branch grouping; the feature that stayed the same is the Jia Day Master and the lookup method.
What stays the same is the counting rule: only the visible day stem is excluded, hidden Jia remains Friend, and visible non-day stems count 1.0 while hidden stems use positional weights 1.0/0.5/0.3. Chart B’s weighted sums include Seven Killings 2.5, Indirect Wealth 1.9, Eating God 1.5, Friend 1.0, Direct Resource 1.0, and Direct Wealth 1.0. These counts are not strength scores, and the star label does not add weight or diagnose a person. Note one limitation: birth time cannot be inferred from star counts. Also, Jie Sha is not Jie Cai Rob Wealth, the Ten God; the names differ and the lookups differ. For deeper reading, see Jie Sha and Wang Shen.
六 How common is this configuration?
Across all 518,400 possible Four Pillars combinations, each star is checked independently. Here “first” means 劫煞 and “second” means 亡神. Repeated hits do not increase the chart count.
| Configuration | Combinations | Proportion |
|---|---|---|
| Neither star | 231,200 | 44.5988% |
| First star only | 87,700 | 16.9174% |
| Second star only | 87,700 | 16.9174% |
| Both stars | 111,800 | 21.5664% |
This is an equal-weight combination-space proportion, not a percentage of people or a birth-registry frequency. We enumerate 60 year pillars × 12 solar-month slots × 60 day pillars × 12 hour slots, respecting the derived month and hour stems. Calendar duration and actual birth timing are not population-weighted.
For each star separately, targets from Year and Day are merged and checked against all four branch positions. The engine result and an independent lookup implementation agree on every combination.