1. Northern Expedition to Mongolia
In order to settle the remnants of the Yuan Dynasty once and for all, starting from 1410 (the 8th year of Yongle), Zhu Di personally led the Ming army in a northern expedition. During this expedition, the Ming army defeated 50,000 Mongolian horsemen in the Battle of Feiyun Mountain, and the Tartars of Mongolia paid tribute to the Ming Dynasty. Five times the northern expedition to Mongolia into a weakening of the power to maintain the peace and quiet of the border of the Ming Dynasty, and later Zhu Di also in the fifth pro-conquest victory on the way back to the dynasty died of illness.
2. Southern conquest of Annam
Annan, known as Jiaotong, has been a dependency of China since the Han and Tang dynasties, and after the Five Dynasties, it became an independent country. At the end of the Yuan war, Annan took the opportunity to take off from the Chinese version of the amplitude, once sent troops into the Siming Road Yongpingzhai, beyond the Yuan dynasty boundary Tongzhu more than two hundred miles, occupying Qiu Wen, Qingyuan and other five counties. Hongwu years, Ming Emperor Zhu Yuanzhang had issued an imperial edict to inform the king of Annam Chen Rikun, order to return, but the Chen Dynasty has been by the state minister Li Yak in power, he coerced the king Chen Rikun, called the army refused to order. Zhu Yuanzhang to war party rest, focus on appeasement, do not want to start again, so ignored, Annan has been in a semi-independent state .
After Zhu Di sent troops to attack Nan'an between 1406 and 1407, and finally Annan became independent, and Ming appointed Li Li as the king of Annan, and the tribute has been unceasing since then. The war ended with the victory of the Ming Dynasty and the demise of the Ho Dynasty, and Vietnam was incorporated into Ming territory, marking the beginning of the period when Annam belonged to the Ming.
3. The Great Victory of Wanghai Crucible
In March of the ninth year of Yongle (1411), the imperial court appointed Liu Jiang as the Chief Military Officer of Liaodong, in charge of the defense of Liaodong. Liu Jiang was a native of Suqian, Pizhou (present-day Su County, Jiangsu Province), whose real name was Liu Rong, and he assumed his father's name Liu Jiang because he was enlisted in his father's army, and he was awarded the title of Marquis of Guangning for his merits, and only then did he change his initial name to Liu Rong.
Yongle fourteen years (1416) in December, in Lushunkou, Wanghai Crucible, left eye, right eye, West Shazhou, three hands of the mountain, the head of the mountain and so on the construction of seven beacons, sent troops to defend against Japanese invaders. On June 15, 1419, the 17th year of Yongle (1419), there was a war in Wanghai Crucible, and the total number of Japanese killed in this war was 742, and 857 were captured alive. Liu Jiang ordered 50 large carts to carry the prisoners and ended the battle of Wanghai Crucible victoriously.