Passage: Chan Kong-sang  (Chinese: 陳港生; born 7 April 1954), known professionally as Jackie Chan, is a Hong Kongese martial artist, actor, film director, producer, stuntman, and singer. He is known for his acrobatic fighting style, comic timing, use of improvised weapons, and innovative stunts, which he typically performs himself, in the cinematic world. He has trained in wushu or kungfu and hapkido, and has been acting since the 1960s, appearing in over 150 films.

Question: What type of weapons does Chan Kong-sand use?
improvised