蔡京
When the outlaws of Liangshan Marsh attack Daming (present-day Daming County, Hebei) to rescue Lu Junyi and Shi Xiu, the Grand Tutor Cai Jing in the imperial capital Dongjing holds a meeting to discuss how to break the siege. Xuan Zan, a military officer, recommends Guan Sheng to Cai as the person who could save the prefecture. Cai summons Guan from Puzhou and appoints him to lead the military mission. Xuan Zan and Hao Siwen, whom Guan brings along to the capital, serve as his lieutenants.