Watch full movie online. The plot of Slaughter in Xian concerns the friendship between a thief turned Chinese opera performer, played by Chow Lung, and an incorruptible police officer, played by Tung Chi Wa. When a delivery of machine guns is hijacked and stolen by a group of not so incorruptible police officers, led by Ku Wing Chuen, who are in collaboration with a pair of gangsters played by Chin Siu Kin and Do Yuk Ming, they try to get rid of Chi Wa so that they can pin the crime on Lung. (Paul Bramhall/CityOnFire.com)