Question: What Hong Kong actor starred in Ip Man 2?
Context: The Legend Is Born – Ip Man is a 2010 Hong Kong biographical martial arts film based on the early life of the Wing Chun grandmaster Ip Man, directed by Herman Yau and starring Dennis To in the titular role.  Though not made in collaboration with Wilson Yip's "Ip Man" or "Ip Man 2", "The Legend is Born" features several actors who appeared in Yip's films, including Sammo Hung, Louis Fan, and Chen Zhihui.  The film also features a special appearance by Ip Chun, the son of Ip Man. 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. Dennis To Yu-hang (born 1 January 1981) is a Hong Kong martial artist and actor.  He started his career as a wushu practitioner and won several awards at various competitions, including a silver medal at the 2002 Asian Games and a gold medal at the 2005 East Asian Games.  To became an actor in 2007 and started off by playing minor roles in "Ip Man" (2008), "Bodyguards and Assassins" (2009) and "Ip Man 2" (2010).  He is best known for his role as the Wing Chun grandmaster Ip Man in the 2010 film "The Legend Is Born – Ip Man". Ip Man is a series of Hong Kong biographical martial arts films starting with "Ip Man" in 2008 and followed by two sequels – "Ip Man 2" (2010) and "Ip Man 3" (2015).  All three films are directed by Wilson Yip, written by Edmond Wong, produced by Raymond Wong and star Donnie Yen.  Mandarin Films released the first two films in Hong Kong, which earned more than $37 million with a budget of around $24.6 million.  The films are based on the life events of the Wing Chun master of the same name.  Donnie Yen has mentioned each film has a unique theme, that the first "Ip Man" film was about "Survival", "Ip Man 2" focuses on "Making a Living and Adaptation", while "Ip Man 3" focuses on "Life" itself. Ip Man: The Final Fight is a 2013 Hong Kong biographical martial arts film directed by Herman Yau, starring Anthony Wong, Anita Yuen, Jordan Chan, Eric Tsang and Gillian Chung.  It is based on the life of the Wing Chun grandmaster Ip Man.  This film has no connection to the earlier Ip Man films, such as Wilson Yip's "Ip Man" and "Ip Man 2", and Wong Kar-wai's "The Grandmaster". Donnie Yen (born 27 July 1963), also known as Yen Chi Tan (甄子丹), is a Hong Kong actor, martial artist, film director, producer, action choreographer, and multiple-time world wushu tournament champion. Ip Man 3 is a 2015 Hong Kong biographical martial arts film directed by Wilson Yip, produced by Raymond Wong and written by Edmond Wong with action choreography by Yuen Woo-ping.  It is the third in the "Ip Man" film series based on the life of the Wing Chun grandmaster Ip Man and features Donnie Yen reprising the title role.  The film also stars Mike Tyson, and Yip Man's pupil Bruce Lee is portrayed by Danny Chan.  Principal photography commenced in March 2015 and ended in June that year. Ip Man 2 (also known as Ip Man 2: Legend of the Grandmaster) is a 2010 Hong Kong biographical martial arts film loosely based on the life of Ip Man, a grandmaster of the martial art Wing Chun.  A sequel to the 2008 film "Ip Man", "Ip Man 2" was directed by Wilson Yip and stars Donnie Yen, who reprises the leading role.  Continuing after the events of the earlier film, the sequel centers on Ip's movements in Hong Kong, which is under British colonial rule.  He attempts to propagate his discipline of Wing Chun, but faces rivalry from other practitioners, including the local master of Hung Ga martial arts. Louis Fán Siu-wong (born 19 June 1973) is a Hong Kong actor and martial artist.  He is best known for his role as Ricky in "" (1991) and as Jin Shanzhao in "Ip Man" (2008) and "Ip Man 2" (2010), as well as his roles in some television series produced by TVB. Ip Man is a 2008 Hong Kong biographical martial arts film based on the life of Ip Man, a grandmaster of the martial art Wing Chun and teacher of Bruce Lee.  The film focuses on events in Ip's life that supposedly took place in the city of Foshan during the Sino-Japanese War.  The film was directed by Wilson Yip, and stars Donnie Yen as Ip Man, with martial arts choreography by Sammo Hung.  The supporting cast includes Simon Yam, Lynn Hung, Lam Ka-tung, Xing Yu, Hiroyuki Ikeuchi and Tenma Shibuya.
Answer: Donnie Yen