What is the relationship between Li Sheng, a loyal minister of Xiping, and Tang Taizu, Li Yuan and Li Shimin?

Born in Longxi, Li moved to Jingzhao, but the Tang royal family was not in this room. So Li Sheng has nothing to do with Tang Gaozu and Li Shimin.

Li Sheng (727-793), a native of Lintan, Zhou Tao, was a strategist in the Tang Dynasty. Because of the title of King of Xiping County, the world is called Li Xiping. Li Sheng was originally a general in the border town. Later, he was transferred to General You Jinwu, Kaifu Yitong No.3 Division and Jingyuan No.4 Town North Court because of his meritorious service, and was named King of Hechuan County. Later, Li Sheng entered Korea as the commander of the right-wing Shence Army.

In the second year of Zhong Jian (78 1), Li Sheng crusaded against the rebellious three towns of Heshuo. In 783, a mutiny took place in Jingyuan County, and Li Sheng went to Fengtian Wang Qin, where he successively served as the chief of Gyeonggi, Weibei, Yanfang and DuDu.

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Li Sheng's personal experience.

In the first year of Guangde (763), Li Sheng was promoted to Fengxiang Army by me and appointed as a column general. Put down the rebellion of Diezhou Qiang and Dangzhou Qiang, and promoted General Zuo Yulin. Later, Li Sheng tried to win over the Tangut Qiang, but he was honored for his work, and soon he was renamed Tai Changqing.

In the fourth year of Dali (769), Tubo invaded Lingzhou (now southwest of Lingwu, Ningxia). When Li Sheng was the commander-in-chief of Fengxiang's right army, he led a thousand foot soldiers out of the Great Earthquake Pass (west of Longxian County, Shaanxi Province) and took Lintao directly.

In the second year of Jianzhong (78 1), Weber made Tian Yue rise up and rebel, and surrounded him (ruling Hebei Yongnian). Li Sheng was appointed as the pioneer of Shence Army. He rescued Lin Ming with Ma Sui from Hedong and Li Baozhen from Zhao Yi.

In October of the fourth year of Jianzhong (783), the foot soldiers of Jingyuan Town rebelled in Chang 'an and made Zhuqiu emperor. Tang Dezong fled to Fengtian (now Ganxian County, Shaanxi Province) in a hurry, which is known as the change of Jingyuan in history. At this time, he had recovered from his illness and was preparing to go north, but he received an imperial edict to return to Li.

Baidu Encyclopedia-Li Sheng