Also known as Crown Prince Jiancheng · Prince Yin

Li Jiancheng, the eldest son of Li Yuan, Gaozu of Tang, was born in 589 and made crown prince in 618. He led the defence against Turkic raids and took part in the campaign against Liu Heita, using lenient policies to pacify Shandong. His rivalry with Li Shimin sharpened with the Yang Wengan affair of 624, and in the Xuanwu Gate incident of 626 Li Shimin shot him dead. He was later named Prince of Xi with the posthumous name Yin, and is known as Crown Prince Yin. The source is the Old Book of Tang.

Life and times

Dates c. 589 CE–626 CE

EraNorthern and SouthernSuiTang
  1. 626Xuanwu Gate IncidentTook part
  2. 626Li Shimin Coup at Xuanwu Gate