Shi Xiu
When Song Jiang is heading a military attack against Daming Prefecture (大名府; present-day Daming County, Hebei) to rescue Lu Junyi and Shi Xiu, he suddenly falls very ill with a tumour on his back. A fever comes on and never subsides, causing him to finally fall into delirium. Back in Liangshan with his troops, Song continues to be bedridden, with his condition deteriorating and all medicines to no avail. Zhang Shun, who grew up in the Yangtze region, remembers that once his mother had a similar illness and was healed by An Daoquan. He volunteers to fetch An from Jiankang.