Louis Cha Leung-yung, GBM, OBE (born 6 February 1924), better known by his pen name Jin Yong, is a modern Chinese-language novelist. Having co-founded the Hong Kong daily Ming Pao in 1959, he was the paper's first editor-in-chief.
Cha's fiction, which is of the wuxia ("martial arts and chivalry") genre, has a widespread following in Chinese-speaking areas, including mainland China, Hong Kong, Taiwan, Southeast Asia, and the United States. His 15 works written between 1955 and 1972 earned him a reputation as one of the finest wuxia writers ever. He is currently the best-selling Chinese author alive; over 100 million copies of his works have been sold worldwide (not including unknown numbers of bootleg copies).