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BaZi Case Library / Politics & Military/ Li Shimin, Emperor Taizong of Tang (李世民（唐太宗）)
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Li Shimin, Emperor Taizong of Tang (李世民（唐太宗）)

Li Shimin, known as Emperor Taizong of Tang, was born in Wugong, Shaanxi, and played a key role in founding and stabilizing the Tang dynasty.

Birth
0599-01-23 02:00 · Wugong, Shaanxi
Gender
Male
Time Source
Web search

Birth Time Verification

This page uses the Chou hour for Li Shimin, giving the four pillars as Wu Wu, Yi Chou, Wu Wu, Gui Chou. The cited BaZi source gives a Chou-hour birth on a Wu Wu day, and the local chart check for 599-01-23 02:00 matches the same year, month, day and hour pillars. The Chou hour matters. Both the month and hour branches are Chou, while the Wu Earth Day Master also sits on a Wu Fire branch. Earth and Fire are therefore very strong. Yi Wood in the month stem and Gui Water in the hour stem give the chart two ways to breathe: Yi Wood points to order, rank and governing rules, while Gui Water points to strategy, resources and the ability to listen. His movement from military force into government cannot be read from heavy Earth alone. It needs this Wood-and-Water opening.
Confirmed Time
02:00
Hour
癸丑
Time Source
Web search

Core Analysis

Li Shimin's chart is Wu Wu, Yi Chou, Wu Wu, Gui Chou. The Wu Earth Day Master is reinforced by another Wu stem, sits on a Wu Fire branch, and is further weighted by two Chou branches. The local chart check reads the Day Master as extremely strong, with Wood useful and more Earth unfavourable.

The most important visible pattern is Yi Wood Authority in the month stem and Gui Water Wealth in the hour stem. Yi Wood represents order, rank, restraint and the grammar of rule. Gui Water represents resources, strategy, counsel and later governance. When Earth is too thick, the person can become rigid. With Water and Wood showing, there is room for a warrior to hear advice and build institutions.

The natal chart also has Chou harming Wu. Two Chou branches press against the two Wu branches, so family, succession and internal power never look smooth. In 626, the Wu Chen luck pillar met the Bing Xu year. Chen and Xu clashed, Chou and Xu formed punishment, and the succession struggle erupted as the Xuanwu Gate Incident. In the Zhenguan years, the useful Water and Wood side became more visible through counsel, talent selection and administrative order.

Key BaZi Signals
Main Line
Wu Earth Day Master
Structure
Wealth and Authority visible
Relations
Year Branch Wu · Day Branch Wu
Useful Elements
Wood and Water useful

Traits

01

Can Carry Heavy Pressure

The strong Wu Earth structure suggests someone who does not scatter when chaos pushes against him.

02

Instinct for Order

Yi Wood Authority in the month gives a clear concern for rank, law and governing structure.

03

Uses Resources Well

Gui Water Wealth in the hour points to the ability to use people, money and information.

04

Kinship Pressure

Two Chou branches harming two Wu branches make succession and sibling conflict hard to keep calm.

Timeline

Each year shows the event, luck pillar, annual pillar, relations, and interpretation for direct comparison.

617
19yrs Career

Joined Li Yuan’s Jinyang Uprising

Li Shimin joined his father’s uprising and entered the struggle at the end of the Sui dynasty.

BaZi Note
In the Ding Mao luck pillar, Ding Fire Resource supports the self, while Mao Wood gives rank and direction. The Ding Chou year repeats the Chou pressure around family and military power. This was not merely private boldness. It came through a father-son bloc, political legitimacy and a military opening.
621
23yrs Career

Won at Hulao and Settled the Central Plains

Li Shimin defeated Dou Jiande and Wang Shichong, making Tang control of the central plains far more secure.

BaZi Note
The Ding Mao luck pillar strengthens the Authority side, linking victory with rank and military legitimacy. In 621, Xin Metal appears as Hurting Officer, and Si with Chou pulls toward Metal, sharpening tactics and decision. It is risky, but in a war setting that sharpness can break a deadlock.
626
28yrs Career

Xuanwu Gate and Accession

The Xuanwu Gate Incident broke out. Li Shimin was then made crown prince and soon became emperor.

BaZi Note
The Wu Chen luck pillar brings Companion energy, which often highlights brothers, peers and direct power competition. In the Bing Xu year, Xu clashes with Chen and punishes Chou. Fire and Earth press an already heavy chart, matching the severity of the succession crisis.
627
29yrs Career

Began the Zhenguan Reign

Li Shimin adopted the Zhenguan reign title and began building a more stable political order.

BaZi Note
The Wu Chen luck pillar still carries heavy Earth, but the Ding Hai year brings Hai Water. Water can moisten thick Earth and help Wood function. The early Zhenguan emphasis on counsel, restraint and institutions fits the useful Water-and-Wood side of the chart.
649
51yrs Personal

Died at Cuiwei Palace

Li Shimin died in the twenty-third year of Zhenguan.

BaZi Note
In the Geng Wu luck pillar, Wu Fire repeats the day branch and intensifies the natal Chou-Wu harm. The Ji You year adds Earth while You combines with Chou toward Metal, increasing both pressure and leakage. In traditional longevity reading, Fire pressing the body, heavy Earth and Metal draining the chart all point to concentrated health depletion.

FAQ

Why does this page use the Chou hour for Li Shimin? +
The cited BaZi source gives a Chou-hour birth and the pillars Wu Wu, Yi Chou, Wu Wu, Gui Chou. The local chart check for 599-01-23 02:00 matches that set exactly.
What is the central BaZi signal in Emperor Taizong’s chart? +
The chart is heavy in Wu Earth, while Yi Wood Authority and Gui Water Wealth are visible. That is why the reading focuses on force shaped by counsel, institutions and resource control.
How does the Xuanwu Gate Incident show in the chart? +
In 626, the chart was in the Wu Chen luck pillar and the Bing Xu year. Companion energy, the Chen-Xu clash and Chou-Xu punishment all point to a violent power struggle among close kin.
Why did the Zhenguan reign become stable? +
Heavy Earth can hold a state together, but Wood and Water make it governable. Gui Water relates to counsel and strategy, while Yi Wood relates to rule, rank and restraint.
How is Li Shimin’s death in 649 read? +
The Geng Wu luck pillar repeated Wu Fire, and the Ji You year added Earth and Metal drainage. Traditional longevity reading would see this as a period of strong physical depletion.

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