weaknesses, he spoke, with regard to Yang: Yang Shidao is pure and mild in his actions, and he will not make mistakes or offenses. But because he is weak and timid in personality, I cannot receive his help in times of urgency. In 645, when Emperor Taizong attacked Goguryeo, Yang followed him and was made acting Zhongshu Ling, but was said to perform poorly, and after the end of the campaign, he was demoted to the post of minister of labor, and then minister of rites. He died in 647 and was buried near the tomb of Emperor Taizong's wife Empress Zhangsun, where Emperor Taizong would eventually be buried himself. References Old Book of Tang, vol. 62. New Book of Tang, vol. 100. Zizhi Tongjian, vols. 189, 190, 191, 194, 195, 197, 198. 647 deaths Chancellors under Emperor Taizong of Tang Sui dynasty people Year of birth unknown