Famous soldier in Tang dynasty. My real name is Sudden, and my ancestral home is Shangwen Village, Yuxian County. Everyone marveled that he practiced martial arts since childhood, and he was quite powerful. At the end of the Sui Dynasty, people gathered to expose the pole, and later joined Li Yuan. In the military career of accomplishing the great cause of reunification and territorial expansion in the Tang Dynasty, he repeatedly made meritorious military service, and successively served as Doctor You Guanglu, General You Tunwei and General Zuo, and was named Duke Guo and Duke Xun. However, when he pacified Liaodong, he was demoted to the army because his husband, He Zongxian, was exhausted from impersonating general Xue. After pacifying Liaodong, he was reinstated. Tang Xian died of illness in the early Qing Dynasty (656), died in Jingzhou, and was buried with Taizong Zhaoling. Both Old Tang Shu and New Tang Shu have biographies.