姚兴
Also in 402, Yao Xing created his concubine Consort Zhang empress. He also created his son Yao Hong as crown prince and other sons as dukes. (Yao Xing had long wanted to create Yao Hong, described as kind, loving, and studious, as crown prince, but hesitated because Yao Hong was also regarded as having a weak personality and prone to illnesses.)