In spring 568, Emperor Wucheng suffered a major illness, and the official Xu Zhicai (徐之才), who was an accomplished physician, treated him back to health. After Emperor Wucheng recovered, however, He Shikai, whose position was lower than Xu's, wanted to be promoted, and so had Xu sent out to Yan Province (兗州, roughly modern Jining, Shandong) to be governor. In winter 568, Emperor Wucheng suddenly fell ill again, and he summoned Xu. Before Xu could arrive, however, around the new year 569, he died, while holding He Shikai's hands and entrusting the important matters to him.