They were to solve the problems in Southeast Asia and South Asia; to look for Emperor Hui; to show off the military and prosperity to gain tribute trade; to make further preparations for expeditions west of South Asia.

• 主要内容包括四个方面：一是解决东南亚、南亚的矛盾；二是追寻惠帝的踪迹；三是耀兵示富进行朝贡贸易；四是为进一步向南亚以西航行做好准备。