Zhu Biao, a graduate student in the Department of History, wrote his thesis on "What would happen if Zhu Biao did not die?"
Before the paper was handed in, he died suddenly in the library.
When he opened his eyes again, he became the Ming Dynasty Prince Zhu Biao - the unlucky man who only lived for thirty-seven years in history, and his death triggered the Lan Yu Case and the Jingnan Campaign.
Good news: His father, Zhu Yuanzhang, hasn't started killing heroes yet.
Bad news: his dad is watching Lan Yu sharpen his knife.
Zhu Biao looked at the civil and military forces of the entire dynasty - the arrogant Lan Yu, the vassal king who was ready to make a move, and the court that could explode at any time.
How to break this situation?
He knocked on Lan Yu: "Uncle, if you are arrogant again, my father will punish your nine clans. I can't speak well, why don't you go and tell your father?"
Lan Yu was stunned instantly.
He summoned Fang Xiaoru: "Mr. Fang, come and be a teacher for the prince. Food and accommodation will be provided."
Fang Xiaoru: I rejected Zhu Yuanzhang, but I can't reject you.
He wrote to Zhu Di: "Fourth brother, you will do a good job in Peiping. My eldest brother believes in you."
Zhu Di: Brother, I will do a good job!
He investigated the cause of Chang's death, withdrew the military power, established a cabinet, set up a research institute, improved farm tools, developed firearms... He did it one by one.
Zhu Yuanzhang held his hand before he died: "Biao'er, I have killed countless people in my life, but I am lucky to have you."
He did it. There was no Lan Yu case, no battle of Jingnan, and no ten clans were executed.
Zhu Di is still the fourth brother who guards the north. Yunwen and Yunxi are both civil and military, and the Ming Dynasty is peaceful and the people are safe.
When he traveled through time, it was written in the history books that "the crown prince passed away".
When he left, the historian wrote, "Antai Emperor Zhu Biao reigned for nine years, and the country was peaceful and the people were happy and prosperous. There was no comparison for three generations or less."