전연
Soon, however, Former Yan would apparently have a good chance to conquer Former Qin. In winter 367, Fu Jian's brother Fu Shuang (苻雙) the Duke of Zhao, and cousins Fu Sou (苻廋) the Duke of Wei, Fu Liu (苻柳) the Duke of Jin, and Fu Wu (苻武) the Prince of Yan, rebelled and requested Former Yan resistance, offering to submit to Former Yan. As Fu Sou held the important gateway city of Shancheng (陝城, in modern Sanmenxia, Henan), this opened up the center of Former Qin to Former Yan. However, Murong Ping refused to act, and in late 368, Fu Jiān defeated the four rebel dukes.