Ming Chengzu Zhu Di had three places on the throne, namely the eldest son Zhu Gaoxu, the second son Zhu Gaoxu and the third son Zhu Gaoxuan.
Zhu Di
We know that the eldest son, Zhu Gaozi, finally won the throne, which was later Akihito. Moreover, in ancient China, we practiced the system of primogeniture, and Zhu Gaozi's identity was also very orthodox, coupled with his close relationship with the civil and official clique of the Ming Dynasty, so he received their strong support. Although Zhu Gaozi is not good at force, he loves literature and has a very good brain. In the later period, he became emperor and did a lot of practical things, and the historical evaluation was not low.
Stills of The Great Ming Dynasty Zhu Gaozi
Speaking of this second son, Zhu Gaoxu, he and the later Renzong Zhu Gaoxu were the same mother and brother, and the relationship was very close. This person had made many military achievements, and had saved his father Zhu Di many times, but he was at odds with his brother Zhu Gaozi, and had repeatedly rebelled, and finally he was defeated and killed.
Zhu Gaoxuan was the third son of Zhu Di, the ancestor of Ming Chengzu, who was not very famous in history compared to Zhu Di's other two sons, but he was also one of the few good people.