Wang Lang (; died December 228), courtesy name Jingxing (景興), was a Chinese politician and minor warlord who lived during the late Eastern Han dynasty of China. He served notably in the Han central government as Administrator of Kuaiji Commandery and in the later state of Cao Wei during the Three Kingdoms period. He was also a maternal great-grandfather of Sima Yan, the founding emperor of the Jin dynasty, through his granddaughter Wang Yuanji's marriage with Sima Zhao. Early life and career Wang Lang was from Tan County (), Donghai Commandery (), which is around present-day Tancheng County, Shandong. His original given name was "Yan" () but he changed it to "Lang" () later. He started his career as a Palace Gentleman () due to his academic proficiency, particularly with the Chinese Classics. When his teacher Yang Ci () died in late 185, he left his post and went back to his home county to mourn him. Later, he served Tao Qian, the Governor of Xu Province, where he advised Tao Qian and several other warlords to pledge allegiance to Emperor Xian, citing the Spring and Autumn Annals. Tao Qian then sent an envoy to the Han central government in Chang'an to pledge allegiance to the Emperor, and in return received the appointment "General Calming the East". The Han central government also appointed Wang Lang as the Administrator of Kuaiji Commandery. As a warlord During Wang Lang's tenure as Administrator of Kuaiji Commandery, Wang Lang banned the worship of Qin Shi Huang, a widespread custom among locals, believing that he was a ruler without virtue. Wang also formed a secret alliance with the Shanyue tribes. When the warlord Sun Ce started his Jiangdong campaign, Wang Lang financed the Shanyue leader Yan Baihu to fight Sun Ce, but Yan Baihu and the other Shanyue clan leaders lost to Sun Ce; at the time, Liu Yao, another warlord in the Jiangdong region, had also lost to Sun Ce in battle. Yan Baihu had become the head of a loose confederation composed of bandits and local officials, including Wang Lang, and he again gathered soldiers numbering tens of thousands. Despite opposition from his adviser Yu Fan, Wang Lang directly joined Yan Baihu in military operations against Sun Ce's forces, but they were defeated. Wang Lang then escaped to Dongye (). There, he gained the support from the Chief of Houguan () and attempted