Li Chengliang (; 1526–1618) was a Ming dynasty general. Early life Born in a military family in Tieling (in modern-day Liaoning province, Liaodong in the Ming empire's northeast), Li suffered from poverty during his childhood. It was not until he reached the age of 40 that he received an official appointment, but he eventually became Liaodong Regional Commander () with the backing of the Chief Grand Secretary Zhang Juzheng. Li served two terms as Liaodong Regional Commander, for 22 years and 8 years respectively. Military career against the Mongols In the 1570s, the Chahar Mongols migrated east and often harassed the Liaodong region. Li's first tenure as Liaodong Regional General saw five victories against the Chahar. For these victories, in 1579 he was named "Earl of Ningyuan" (Ningyuan bo 寧遠伯), a title that was made hereditary in 1580. 1575 (third year of the Wanli reign): Tümen Khan led over a hundred thousand cavalry troops to attack and pillage the Yizhou and Jinzhou regions, but was defeated by Li. 1578 (Wanli 6): Tümen Khan attacked again, this time in Liaoyang, but was defeated again. 1579 (Wanli 7): Tümen Khan attacked the Yizhou / Jinzhou region and besieged Guangning 廣寧 (modern-day Beining). 1580 (Wanli 8): Tümen Khan gathered 40,000 cavalry, each horse tailing a cattle and three sheep. 1581 (Wanli 9): Tümen Khan gathered nine tribes totaling a hundred thousand men and horses and attacked Liaodong with the intention of reaching Beijing. Jianzhou Jurchen war He was charged with maintaining peaceful relations with the Jurchen tribes. The Jianzhou Jurchen chieftain Wang Gao () had frequently assaulted Ming cities and killed the Ming commander at Fushun in 1573. The Ming sent a punitive expedition that drove Wang north into the lands of another Jurchen tribe, the Hada, where he was captured by Wang Tai, leader of the Hūlun federation, and handed over to Li Chengliang, who executed him in 1575. Wang Gao's death intensified the power struggles that were already taking place between Jianzhou Jurchen chieftains. Giocangga and his son Taksi, who had been subjects to Wang Gao's authority, secretly allied themselves with Li Chengliang to enhance their power. In 1582 Wang Gao's son Atai () raided Ming lands. Ming sent a punitive expedition, which Giocangga and Taksi supported. In the ensuing assault on Atai's fort, and under unclear circumstances, both Giocangga and Taksi were killed, by rival Jurchen leader Nikan Wailan who