Hongxi Emperor
When it was time for him to choose an heir, the Yongle Emperor wanted to choose his second son, Zhu Gaoxu. Zhu Gaoxu had an athletic-warrior personality which contrasted sharply with his elder brother's intellectual and humanitarian nature. Despite much counsel from his advisers, the Yongle Emperor chose his older son, Zhu Gaozhi (the future Hongxi Emperor), as his heir apparent mainly due to advice from Xie Jin. As a result, Zhu Gaoxu became infuriated and refused to give up jockeying for his father's favour and refusing to move to Yunnan Province, where his princedom was located. He even went so far as to undermine Xie Jin's counsel and eventually killed him.