Question: Yu Rongguang is best known for being featured in which film directed by Kim Sung-su ?

Context paragraphs:
Iron Monkey 2: Iron Monkey 2 is a 1996 Hong Kong martial arts film directed by Chao Lu-jiang and featuring action choreography by Yuen Woo-ping.  This film starred Donnie Yen as "Iron Monkey", a role played by Yu Rongguang in the 1993 film "Iron Monkey", which also starred Yen, but in a different role.  The story in "Iron Monkey 2" is not related to that of "Iron Monkey".

Man Wanted (1995 film): Man Wanted is a 1995 Hong Kong action thriller film directed by Benny Chan and Steve Cheng and starring Simon Yam, Yu Rongguang, Christy Chung and Eileen Tung.

Asura: The City of Madness: Asura: The City of Madness () is a 2016 South Korean action crime drama film directed by Kim Sung-su.

Yu Rongguang: Yu Rongguang (born 30 August 1958), also known as Ringo Yu, is a Chinese actor and martial artist who started his career in Hong Kong.  He is best known for the title role in "Iron Monkey" along with Donnie Yen as well as being featured in films such as "The East Is Red", "My Father Is a Hero", and "Musa".

Iron Monkey (1993 film): Iron Monkey is a 1993 Hong Kong martial arts film written and produced by Tsui Hark and directed by Yuen Woo-ping, starring Donnie Yen, Yu Rongguang, Jean Wang, Angie Tsang and Yuen Shun-yi.  It is not related to the 1977 Hong Kong film of the same title.

Musa (film): Musa (; lit.  "Warrior"), released as both "The Warrior" and "The Ultimate Warrior" in English-speaking countries, is a 2001 South Korean epic film directed by Kim Sung-su, starring Jung Woo-sung, Ahn Sung-ki, Joo Jin-mo and Chinese actress Zhang Ziyi.  The semi-historical story follows the adventures of a Korean peace delegation as they try to get back to Korea through the inhospitable deserts of northern China.

Ip Man (TV series): Ip Man is a 2013 Chinese television series romanticising the life of Ip Man (Mandarin: Ye Wen), a Chinese martial artist specialising in Wing Chun.  Directed by Fan Xiaotian, the series starred Hong Kong actor Kevin Cheng as the title character, with Han Xue, Liu Xiaofeng, Chrissie Chau, Song Yang, Yu Rongguang, Yuen Wah and Bruce Leung as part of the supporting cast.  Wilson Yip, the director of the films "Ip Man" and "Ip Man 2" (starring Donnie Yen), and Taiwanese producer Young Pei-pei served as the artistic consultants for the series, while Ip Man's sons, Ip Chun and Ip Ching, served as the martial arts consultants.  The series was shot from July–November 2012 in Kunshan, Suzhou, and was first aired on Shandong TV from 24 February to 9 March 2013.  It won the Golden Eagle Award for Best Television Series in 2012.

The East Is Red (1993 film): The East Is Red, also known as Swordsman III, is a 1993 Hong Kong wuxia film.  The main character in the film is loosely based on Dongfang Bubai, a character in Louis Cha's novel "The Smiling, Proud Wanderer".  The film was produced by Tsui Hark, directed by Ching Siu-tung, and starred Brigitte Lin, Joey Wong and Yu Rongguang.  The film is regarded as a sequel to "The Swordsman" and "Swordsman II".

Rock N'Roll Cop: Rock N'Roll Cop is a 1994 Hong Kong action crime drama film produced and directed by Kirk Wong, starring Anthony Wong Chau Sang, Wu Hsing-kuo, Yu Rongguang, Carrie Ng and Chen Ming Chen.

Madame Aema 9: Madame Aema 9 () is a 1993 South Korean film directed by Kim Sung-su.  It was the ninth in the "Madame Aema" series, the longest-running film series in Korean cinema.

Supporting paragraphs: Yu Rongguang Musa (film)
Answer: Musa