WuXia Movie Synopsis:
It is 1917 Yunnan and Liu Jinxi (Donnie Yen) lives a quiet life with his wife Yu (Tang Wei) and their two young sons Xiaotian and Fangzheng. Liu runs a paper mill and the village prospers. One day, two fugitives arrive demanding money and after a long fight with Liu, end up dead.
The bigger one is identified as an especially powerful fighter. Liu becomes a local hero but detective Xu Baijiu (Kaneshiro Takeshi), an expert in physiology and pressure points, is puzzled how a seemingly ordinary man like Liu was able to defeat two hardened fugitives.
Liu finally tells Xu that he is actually a convicted killer and spent 10 years in Jingzhou prison. However Xu, who notices that Liu is surrounded by a powerful qi force-field, is still suspicious, and when an associate (Jiang Wu) reports from his investigations in Jingzhou, he realises Liu is actually Tang Long, second-in-command of the murderous 72 Demons gang and the favourite son of its Tangut leader (Jimmy Wang) and his wife (Kara Hui).