During Judy's reign, the then capital moved to Beijing, making Beijing the imperial center of the Ming Dynasty, realizing feudal autocracy and showing the authority of the emperor. Moreover, Judy also abolished the prime minister system, established the cabinet system, and ruled the country with civil servants, which made them occupy a higher position in the court. Moreover, he also set up various secret service agencies, which can strengthen the autocratic monarchy system and provide the strength foundation for Yongle. Judy has also made great changes in the military. He organized all the troops into organizational systems, carried out many reforms, weakened the guards of the captaincy, strengthened the military defense in Beijing, and set up jurisdiction areas in the north and south. Judy also personally conquered the northern desert, enhanced the prestige of the king in the hearts of the people, consolidated the status of the emperor, vigorously developed agriculture, reduced the burden on farmers and reduced taxes. Judy also ordered the compilation of Yongle Dadian, which preserved the classic history books and left an irreplaceable cultural heritage for the Chinese nation. At that time, he also learned to adopt a foreign policy, demonstrated the demeanor of a big country, and publicized the national prestige of the Ming Dynasty. He ordered Zheng He to go to the Western Seas seven times to strengthen economic and trade ties and exchanges with other countries. The national strength was very strong at that time. The Yongle facilities created by Judy have promoted the all-round promotion of national strength, whether in strength, economy or military, and promoted the all-round promotion of the unified situation. It is not easy to create such a prosperous Yongle period.