Introduction to the prosperous age of Yongle: The reign of Emperor Chengzu of the Ming Dynasty was named Yongle. During his reign, he was determined to make progress and achieved brilliant achievements. He established a cabinet, moved the capital to Beijing, conducted five northern expeditions, drove out the Mongolian intrusive forces, established the Nurgan Dusi and Hami Guards, consolidated the northeast and northwest border defenses, and dredged the Grand Canal. It has played a major role in the unification of the country and the development of the economy. In particular, the revised "Yongle Dadian" has become a world cultural heritage. He sent Zheng He to lead the world's largest fleet on seven missions to the West, demonstrating its strong national power. What is shown here is the scene when Chengzu of the Ming Dynasty accepted the worship of foreign envoys led by Zheng He and the captured Ceylon Dynasty.