Zhu Yuanzhang can be said to have created a special case, even making the emperor's grandson the crown prince, which eventually led to the rebellion of the fourth son, Zhu Di, the king of Yan, and the old Zhu family also began a wave of nest fighting. In fact, before the establishment of Emperor Wen of Jianwen Zhu Yunjiao as crown prince, Zhu Yuanzhang actually cultivated such a "seed player" - the eldest son Zhu Biao.

Zhu Biao can be said to be a very qualified and very good heir, his mother Xiaoci Gao Empress Ma Shi, and also the father of Emperor Minghuizong Zhu Yunjiao.
Zhu Biao was born in September of the fifteenth year of the Yuan Dynasty (1355) in the family of the Taiping merchant Chen Di. When Zhu Yuanzhang was proclaimed King of Wu, he made him a son of the world and studied the scriptures with Song Lian. Since he was carefully taught since childhood, Ming Taizu had high hopes for him and cultivated him in many ways. In the first year of Hongwu's reign (1368), he was made crown prince.
In a sense, Zhu Biao was deeply loved by Zhu Yuanzhang, and his character was excellent, and he was deeply loved by the imperial court and even the people. Zhu Biao came into contact with confucian classics from an early age, had a kind and generous personality, and was very friendly to his younger brothers, such as Zhu Zhu of Qin, Zhu Tang the King of Jin, Zhu Di the King of Yan, and Zhu Shu of Zhou, who had many mistakes, and Zhu Biao reconciled and interceded, sparing them from punishment and the highest prestige among the kings.
The "History of Ming" records that the prince was loved by people. The famous Mu Yingmu was once raised by Zhu Yuanzhang. "The emperor may have overdoed the matter, and the prince was comforted by his high court, and his benevolent nature was also." In other words, that is to say, Zhu Biao's character is actually very good, at least there is no stain in the history of the canon or the history of the wild.
And Zhu Biao is also very good at dealing with people, playing well with several brothers, and is very good at handling royal interpersonal relationships! At the same time, the imperial court is also like a fish in the water, and has a good relationship with all the ministers, and it can be said that they know the imperial heart technique very well.
Moreover, Zhu Biao is not only "benevolent", people have also been on the battlefield, after all, Zhu Yuanzhang's cultivation of him is definitely all-round. Zhu Biao had fought in battles, defended the city, could fight good battles, and had a good relationship with the military generals. Moreover, when Zhu Yuanzhang went out to fight, the crown prince Zhu Biao supervised the country and was also extremely good at handling government affairs, and it can be said that he was really a pretty good candidate for the crown prince! From a certain point of view, Zhu Yuanzhang's vision of this point is still quite good.
Unfortunately, it was such a prince who was both literate and martial, who died young, and Zhu Yuanzhang could be described as a white-haired person sending a black-haired person. Therefore, if Zhu Biao does not die, I think there will not be so many problems in the future.
First of all, Zhu Biao does not die, he will definitely become the emperor. If he became emperor, he would certainly not be so stupid as to rush to cut the domain (the feat of The Jianwen Emperor Zhu Yunjiao), and shengsheng forced Zhu Di to rebel. Secondly, even if Zhu Di rebelled, with Zhu Biao's ability, he would certainly not be foolish to send Li Jinglong to lead the soldiers to fight, and he would not be stupid to say that he was not allowed to hurt the fourth brother Zhu Di (Zhu Yunjiao was still too young).
In the end, in fact, it is very likely that Zhu Biao, the big brother, is there, and Zhu Di has no reason or courage to dare to rebel. Because first, Zhu Biao is the eldest son of the royal concubine of Gen Zheng Miaohong, compared to Zhu Di's rising soldiers, it is even more unjustified; second, with Zhu Biao's wrist, Zhu Di's fourth brother is afraid that he knows his eldest brother quite well, and he may not be able to fight Zhu Biao, and if he is obedient and obedient, It is estimated that Zhu Biao's character will not kill him, and it is estimated that Zhu Biao will not be so good at talking if he rebels.
In a word, if Zhu Biao did not die, Zhu Di would most likely not be able to seize power, but unfortunately his son Zhu Yunjiao was still too young to experience enough. However, judging from Zhu Biao's various performances during this time as the crown prince, if he came to govern the world, it would certainly not be very bad, at least compared with Zhu Di, I think it would not be much worse. Although Zhu Di is a martial artist of Wenzhi, Zhu Biaona is also well-known, and he still has a good look compared to the two. What do you think about this?