苻登
In 392, Yao Chang grew ill, and Fu Deng, hearing this, made a major attack on the important Later Qin city Anding (安定, in modern Pingliang, Gansu), but Yao Chang, in his illness, nevertheless faced him in battle, forcing Fu Deng to withdraw—and then, in the engagement, made a clean evasive maneuver with his troops and disengaged, to Fu Deng's surprise, and Fu Deng commented: