The Ming campaign against the Uriankhai, or the Battle of Jinshan (), was a 1387 offensive military expedition of the Ming dynasty's army led by General Feng Sheng against the Uriankhai horde of the Mongol chieftain Naghachu in Manchuria. It concluded with the surrender of the Uriankhai to the Ming. Background During the 1380s, the Mongol commander Naghachu had organized the many Mongol tribes of Manchuria into the Uriankhai. They frequently clashed with the Chinese along Ming China's northeastern frontier regions. Course In December 1386, the Hongwu Emperor ordered General Feng Sheng to lead an army of 200,000 soldiers against the Mongols. In early 1387, Feng Sheng was commissioned as the Grand General, assigned Fu Youde and Lan Yu to assist him, and raised a large army. The Hongwu Emperor drew the plans with the ultimate objective to conquer Jinshan. The Ming army comprised 200 thousand soldiers, including the 50,000 soldiers that garrisoned four fortresses. General Feng Sheng and General Fu Youde commanded the front army, while General Lan Yu commanded the rear army. Zhu Di, Prince of Yan, commanded the princely guard, but saw relatively limited action. In January 1388, General Feng Sheng led the Ming army to Tongzhou (通州), where he sent General Lan Yu with a cavalry unit to attack a Mongol force at Qingzhou (慶州). Lan Yu defeated the Mongol force, capturing the Mongol governor, many Mongol people, and their horses. On 20 March 1387, General Feng Sheng led the Ming army northward through the Great Wall. Fortresses were constructed at Daning (大寧), Fuyu (富峪), Huizhou (會州), and Kuanhe (寛河) near the Great Wall of China and completed at the end of the summer of 1387. In Daning, a regional military commission was established to command the four fortresses. Zhu Quan, Prince of Ning, would later be stationed at Daning and take command of the four fortresses. Beiping, Shandong, Shanxi, and Henan provinces dispatched the peasantry to transport grain to the north. Millions of piculs of foodstuff were stored at the four fortresses, which served as advance bases. General Feng Shen led his main army further eastward. He left about 50,000 troops at Daning. On 7 July 1387, Zhen Yong (陣鏞; Marquis of Linjiang) and his division had become separated from the main army and was ambushed, resulting in the killing of Zhen. In July 1387, the Ming army advanced further and crossed the Liao River.