Alas, at this point, is there still a way back for Zhu Di?
Before Zhu Di decided to "move" Zhu Yunjiao, he had to think about what consequences would be for "moving" and what the consequences would be for "not moving."
After "moving" Zhu Yunjiao, the next step is to face the south and turn back to the north, called the lonely road widow, unify the world, and thousands of generations. Of course, there will be opposition, but it doesn't matter, this is almost a by-product of being an emperor, and no sage emperor can avoid it.
"Don't move" Zhu Yunjiao, then Zhu Di is a traitor and a thief—Cao Cao and Emperor Xian of Han, Li Yuan, and Emperor Yang You of Sui are another matter. Nanjing was Zhu Yunjiao's territory, with a group of his loyal subjects. As long as Zhu Yunjiao lived, they would not obey Zhu Di, and Zhu Di would be ambushed on all sides and dangerous.
Can it be reconciled? No way. Even if the young Zhu Yunjiao put the blood of his uncle and nephew above the power struggle, even if Zhu Di was willing to seek peace with war and submit willingly, could the ministers on both sides agree?
The "Jing Difficulty" heroes represented by Yao Guangxiao originally rebelled against Zhu Di with their heads up. If Zhu Di's uncle and nephew reconciled, Zhu Yunjiao, as an emperor, might have spared Zhu Di, or imprisoned him for life without killing, but could he be so tolerant of Yao Guangxiao and others? Is Zhu Yunjiao also related by blood to Yao Guangxiao and others?
Zhu Di's "immobility" to Zhu Yunjiao is equivalent to sending Yao Guangxiao, Qiu Fu, Zhang Yu, Zhu Neng, and others to the guillotine. Will Yao Guangxiao and others agree?
Just like Li Shimin before the "Xuanwumen Change", even though he knew that there was a hasty change and the victory or defeat was uncertain, but the arrow was on the string and had to be sent, Zhu Di had no way to retreat.
This truth was already clearly explained as early as 722 BC more than 2,000 years ago, and it was clearly recorded in the "Zuo Zhuan Zheng Boke Duan and Yan": "The country is overwhelmed, what will the king do?" If you want to do something with your uncle, ask for something, and if you want to do it, please get rid of it, and there is no one who will be born. "The country cannot have two leaders, and if you can indulge him any longer, then let us serve him!"
Whether it is Li Shimin, Zhu Di or Zhu Yunjiao, Zuo Zhuan is their must-read article. Therefore, they all knew that in front of the Xuanwu Gate, on the Golden Ruan Hall in Nanjing, long before the confrontation between brothers and uncles and nephews, the situation was already a possibility of not sharing the heavens and the situation without reconciliation.
Therefore, Zhu Yunjiao's escape was not because of timidity.