One of this man's chancellors fell due to his affection for the sorcerors Cheng Gongying and Gongsun Chang, and that chancellor told this ruler of Hou Junji's plans to defect.
One of this man's chancellors fell due to his affection for the sorcerors Cheng Gongying and Gongsun Chang, and that chancellor told this ruler of Hou Junji's plans to defect. Besides employing Zhang Liang, he commissioned Yan Liben to paint the 24 portraits at Lingyan Pavilion. This man broke a marriage treaty with Yi'nan, a prince of Xueyantuo, and his campaigns included those against Tufan, the Xiyu states, and the Ashina clan of the Gokturk Khanate. He withdrew from his war with (*) Goguryeo, and in earlier life he shot the arrow that killed his brother Li Jiancheng at the Incident at Xuanwu Gate, which ensured his succession among the sons of Emperor Gaozu. For 10 points, name this second emperor of the Tang dynasty.
One of this man's chancellors fell due to his affection for the sorcerors Cheng Gongying and Gongsun Chang, and that chancellor told this ruler of Hou Junji's plans to defect.
{Taizong} of Tang or {Li Shimin}