Within a few days after crossing the Liao River, they surrounded the Mongol stronghold of Jinshan. Within that month, the Ming army established their encampment west of Jinshan. General Feng Sheng returned Nayira'u (Naghachu's former lieutenant, captured in 1376) to Naghachu with a letter that stated that he should surrender and accept the suzerainty of Ming China. Meanwhile, General Lan Yu and his army inflicted much destruction to portions of the Mongol horde in the northern vicinity of the Great Wall. All whilst rice, weapons, and other supplies were transported across the Great Wall into Manchuria for the Ming army. Naghachu and his Mongol horde surrendered to the Ming army. Dreyer (1982) stated that this was on 14 July 1387, while Langlois (1998) stated that this was in October 1387. The lesser Mongol chieftains regarded Naghachu's surrender as a defection and continued resisting. While the Ming army was returning to the Great Wall, the rear guard was ambushed and suffered losses, including Chief Commissioner Pu Ying (濮英), who was the commander of the rear guard. Aftermath The campaign concluded with the capture of Naghachu and his horde of 240,000 people, their families, and their domesticated animals. Naghachu, his 6500 officers, and their families were sent to Nanjing. In the period after his surrender to the Ming, Naghachu was given a marquisate with a stipend of 2000 piculs of grain, an estate of public fields in Jiangxi, and a mansion in Nanjing. He ultimately died (probably due to his excessive alcohol consumption) near Wu-ch'ang on 31 August 1388 and was buried outside Nanjing. Bolstered by this successful campaign, the Hongwu Emperor ordered General Lan Yu to lead 150,000 men on a military campaign against Toghus Temur, the Mongol Khan, culminating in the Ming victory over the Mongol horde at the Battle of Buir Lake in 1388. References Wars involving the Ming dynasty Wars involving the Northern Yuan dynasty Conflicts in 1387 1387 in Asia