Why did Zhu Yunwen of Ming Dynasty win the throne by his uncle Judy and succeed?

First of all, Zhu Yunwen's uncles don't believe it, because Zhu Yunwen is their nephew, a generation younger than them. In addition, Judy is Zhu Yuanzhang's favorite son, because Zhu Yuanzhang thinks Judy is the most like himself, and Zhu Yunwen's father, Prince Zhu Biao, once had cowardice. Zhu Yuanzhang once thought of replacing Judy with a prince, but the minister resolutely opposed it, on the grounds that the young and the old could not be abolished. Later, when Zhu Biao died and the heir to the throne became Zhu Yunwen, the grandson of the emperor, Judy was even more unbalanced. After Zhu Yunwen acceded to the throne, Huang Zicheng suggested cutting Francisco, and Judy pretended to be crazy and fled back to Peiping, hating Zhu Yunwen even more. He always thought that Zhu Yunwen had seized the throne that belonged to him. Therefore, Judy launched the battle of Jingnan under the banner of Jun Qing and seized the throne. As for why Judy succeeded, I have to mention Zhu Yuanzhang, who killed the hero and left the courtiers in Zhu Yunwen with no wise ministers and battle-hardened heroes. If Zhu Yuanzhang leaves Aquamarine, Judy can't succeed, at least it's not that easy.