When the besieged officials brought Ma Mingxin, wearing chains, to the Lanzhou city wall, to show him to the rebels, Su's Salars at once showed respect and devotion to their imprisoned leaders. Scared officials took Ma down from the wall, and beheaded him right away. Su's Salars tried attacking the Lanzhou city walls, but, not having any siege equipment, failed to penetrate into the walled city. The Salar fighters (whose strength at the time is estimated by historians to be in 1,000-2,000 range) then set up a fortified camp on a hill south of Lanzhou. Some Han Chinese, Hui, and Dongxiang (Santa) joined the Salar in the rebellion against the Qing.