After the establishment of the Ming Dynasty, Zhu Yuanzhang faced an unstable situation in China, especially in the northern part of Mongolia, where there were remnants of the regime of the Mongolian Yuan Dynasty, which was then called the Northern Yuan Dynasty. These remnants may pose a threat to the Ming Dynasty, so Zhu Yuanzhang made his son a captaincy along the northern defense line.

The eldest son was made a prince, the second son Qin Wang was sealed in Shaanxi, the third son was sealed in Taiyuan and the fourth son Judy was sealed in Beiping.

At that time, two of these kings in the north were very powerful, one was Rebecca who was good at fighting, and the other was Wang Ning. Where is Wang Ning, that is, western Liaoning, northeastern Hebei and Daning in the present generation?

For example, Wang Ningshan.

What is the purpose of Zhu Yuanzhang's leadership? They want to wing the royal family and defend the mountains and rivers of the Ming Dynasty. But the Ming dynasty also restricted the rights of these princes. What are the restrictions? It is said that these princes don't want to crack the soil. Do not face the people, that is, do not split the country, do not. He doesn't manage state affairs. No, he doesn't manage the civil affairs of other countries. The army can be as small as 9000 to 15000. Three guards, this guard, can only be responsible for the safety of the prince. The prince must not send troops out of the palace.

But the prince has a high position. What's the situation? This tells you not to be polite to him. ; Although you are a civil servant and a veteran, you have made great contributions to the country. But if you want to see the prince, even if he is young, you win. I can't be equal to him. You should give him a big gift. He is the emperor. He is a prince.

One more thing, the prince can control the army and the prince when he is fighting abroad. These skilled veterans don't have to command all the horses. Who will take care of the army and the princes when they go out to fight?

These princes, especially Rebecca and Wang Ning, gave full play to their military talents and formed their own army in the process of fighting against the remnants of Mongolia. During the Hongwu period, before Wen Jian ascended the throne, Judy was already a good general.