Yang Ding (Chouchi)
His family was a part of the Yang clan that ruled Chouchi but fled to Former Qin after they failed to usurp their relatives' throne.Yang Ding became the son-in-law of Qin's ruler, Fu Jian, and after the Battle of Feishui, he became one of the state's most powerful supporters up to its destruction in 394.Yang Ding was serving as Fu Jian General who directs the army as of 385, and saw his first action that year against Western Yan forces led by Murong Chong.[3] Later that year, Yang Ding continued to campaign against Murong Chong, who was besieging Fu Jian's capital of Chang'an at the time.Yang Ding developed a father-son relationship with Murong Chong's close advisor, Gao Gai (高蓋).Yang Ding was with him during that time, and decided to flee to Longyou (隴右, in modern Haidong Prefecture, Qinghai) and gathered his old followers.Yao Chang personally went to reinforce Shuode after his defeat, causing Yang Ding and Fu Zuan to fall back to Fulu.His son, Fu Chong declared himself as his successor and fled to Yang Ding for help after Western Qin forces drove him out of his territory.