 The ranking of those 18 warriors was based on their skills in Martial Arts as well as their physical strength.Some of them somehow have historical archetypes such as Qin Shubao and Shan Xiongxin while others are created by authors of folk stories such as Luo Cheng and Yuwen Chengdu.The ranking itself is disputed, largely because of the fact that the novel "Shuo Tang" only defined 13 out of all 18 warriors.