姚苌
In summer 389, a battle would greatly damage Fu Deng. He had set up a base of operations at Dajie (大界, in modern Xianyang, Shaanxi), guarded by his wife Empress Mao, while attacking Later Qin's city of Pingliang and capturing it. Meanwhile, however, Yao Chang made a surprise attack on Dajie, capturing and killing Empress Mao and Fu Deng's sons Fu Bian the Prince of Nan'an and Fu Shang the Prince of Beihai. Some 50,000 of Fu Deng's people were captured.