During filming when Nathan Jones was to pick up one of the extras and toss him to the floor, Jones got too much into the spirit and the extra ended up going to the hospital with cracked ribs.
Nathan Jones took a fall badly during filming and almost lost several teeth. He refused medical attention and kept filming.
Brandon Rhea insisted that the long stick weapon, known as "mao", be equipped with a proper sharp point, else it'll look strange. He demonstrated his accuracy by having one of the extras hold a stack of newspaper three meters away from him. He did one lunge and thrust the point straight through the middle of the stack. Even Yuen Woo-Ping was impressed.
Several moves planned by Yuen Woo-Ping for Jet Li were deleted by Li for aesthetic and cultural reasons, including cheek slap, and back-of-head slap. Li felt that those moves were too impolite to Westerners.