Question: Who was the director of the 2004 Hong Kong martial arts film starring the actress whose nickname is "Dingding"?
Context: Heroes of the East (), also known as "Challenge Of The Ninja", "Shaolin Vs. Ninja" and "Shaolin Challenges Ninja" is a martial arts film produced in 1978.  It starred Gordon Liu and was directed by Lau Kar-Leung.  Lau Kar-Leung has a cameo role as a master of Zui Quan.  It's notable for portraying Japanese martial arts alongside the more typical Kung-Fu used in most Hong Kong martial arts films. The Prodigal Son is a 1981 Hong Kong martial arts film starring Yuen Biao, and also written and directed by Sammo Hung, who also co-stars in the film.  The film was released on 22 December 1981 and grossed HK$9,150,729.  "The Prodigal Son" was nominated for two Hong Kong Film Awards and won the award for Best Action Choreography. Martial Arts of Shaolin (, lit.  "Southern and Northern Shaolin") aka Shaolin Temple 3: Martial Arts of Shaolin, is a 1986 Hong Kong martial arts film.  It is notable as the only collaboration between film director Lau Kar-leung and actor Jet Li.  The film was later released on Region 1 DVD by The Weinstein Company under the Dragon Dynasty imprint. Throw Down () is a 2004 Hong Kong martial arts film directed by Johnnie To and starring Louis Koo, Aaron Kwok, Cherrie Ying and Tony Leung Ka-fai.  Director To dedicated the film, one of his most personal films to date, to the late Japanese filmmaker Akira Kurosawa and drew elements from Kurosawa's debut feature "Sanshiro Sugata".  The film premiered at the 61st Venice International Film Festival. Ting Man (born 20 June 1983), better known by her stage names Cherrie Ying or Ying Choi-yi, is a Taiwan-born Hong Kong actress.  She moved to New York City at a young age, and later to Hong Kong.  Her nickname is "Dingding" (丁丁), and she is often credited under the name Cherrie In. Kung Pow!  Enter the Fist is a 2002 American martial arts comedy film that parodies Hong Kong action cinema.  Written, directed by and starring Steve Oedekerk, it uses footage from the 1976 Hong Kong martial arts film "Tiger and Crane Fist" (also called "Savage Killers"), along with new footage shot by Oedekerk, to create an original, unrelated plot. Hero () is a 1997 Hong Kong martial arts film written and directed by Corey Yuen.  The film stars Taiwanese-Japanese actor Takeshi Kaneshiro, established Hong Kong action stars from the Peking Opera School (Yuen Biao, Yuen Wah, Corey Yuen, Yuen Tak) and Hong Kong actresses Valerie Chow and Jessica Hsuan.  "Hero" is a remake of the 1972 film, "Boxer from Shantung".  The film was produced by then TVB chairwoman Mona Fong. The soundtrack to the film "Kung Fu Hustle" was released in 2004 and 2005 in conjunction with the 2004 Hong Kong-Chinese martial arts film directed by and starring Stephen Chow.  The majority of the film's original score was composed by Raymond Wong and performed by the Hong Kong Chinese Orchestra.  The score imitates traditional Chinese music in 1940s swordplay films. Five Element Ninjas (Chinese title: 五遁忍術) is a 1982 Hong Kong martial arts film directed by Chang Cheh.  The film is about a Chinese martial arts school finds itself outclassed by their rivals, they hire elite ninja from Japan to destroy the school.  The lone survivor of the massacre learns the secrets of ninjutsu and seeks revenge against the ninja.  Although only starring one member of the famed Venom Mob in Lo Mang, the film very much is in the spirit of director Cheh's later Venom Mob films. Fatal Contact () is a 2006 Hong Kong martial arts film written, produced and directed by Dennis Law, and starring Wu Jing, Ronald Cheng, Miki Yeung, Theresa Fu, Cheung Siu-fai, Ken Lo, Andy On, Lam Suet and Timmy Hung.  Wu Jing played Kong Ko who is trained with the fighting techniques of Sanshou martial arts, and lured into the world of illegal martial arts fighting.
Answer: Johnnie To