Question: What star of A Chinese Ghost Story is widely known as "Fairy Sister"?
Context: A Chinese Ghost Story: The Tsui Hark Animation () is a 1997 Hong Kong animated film.  It was written and produced by Tsui Hark and his production company, Film Workshop.  The animation was produced by Japanese animation studio, Triangle Staff.  It is also referred to as ""Xiao Qian"", ""Little Pretty"", ""Chinese Ghost Story Xiao Qian"". A Chinese Ghost Story () is a 1987 Hong Kong romantic comedy horror film starring Leslie Cheung, Joey Wong and Wu Ma, directed by Ching Siu-tung and produced by Tsui Hark.  The plot was loosely based on a short story about Nie Xiaoqian from Qing dynasty writer Pu Songling's "Strange Stories from a Chinese Studio" (聊齋誌異), and also inspired by the 1960 Shaw Brothers Studio film, "The Enchanting Shadow".  The film was popular in Hong Kong and several Asian countries, including South Korea and Japan, when released.  Most notably it boosted the stardom of Joey Wong, won Leslie Cheung popularity in Japan, and sparked a trend of folklore ghost films in the Hong Kong film industry, including two sequels, an animated film, a television series and a 2011 remake.  The film was ranked number 50 of the Best 100 Chinese Motion Pictures presented at the 24th Hong Kong Film Awards. Liu Yifei (born 25 August 1987), birth name An Feng (安风), legal name Liu Ximeizi (刘茜美子), also known as Crystal Liu, is a Chinese actress, model and singer.  Said to be one of the most beautiful Chinese actresses, Liu is widely known as "Fairy Sister" in the entertainment industry for her sweet and delicate image.  In 2009, she was named as one of the New Four Dan Actresses in China. Ching Siu-tung (born 1953), also known as Tony Ching, is a Hong Kong action choreographer, actor, film director and producer, who has directed over 20 films, including the critically acclaimed supernatural fantasy "A Chinese Ghost Story" (1987).  He produced the spectacular clip L'Âme-Stram-Gram for the French star singer Mylène Farmer at a cost of €1 million.  He studied in the Eastern Drama Academy and trained in Northern Style Kung Fu for 7 years Eternity: A Chinese Ghost Story (倩女幽魂) is a Chinese period drama series produced by Taiwanese station CTS in collaboration with several other countries and is loosely based several famous folktales such as the love story of Nie Xiaoqian and Ning Caicheng from Pu Songling's novel "Strange Stories from a Chinese Studio" (聊斋志异), the legend of Gan Jiang and Mo Ye and others.  The cast consists of actors from China, Hong Kong, Taiwan, Malaysia, and Singapore. A Chinese Ghost Story III "(Sinnui Yauwan III: Do Do Do)" is a 1991 Hong Kong romantic comedy-horror film directed by Ching Siu-tung and produced by Tsui Hark.  It is the sequel to "A Chinese Ghost Story" and "A Chinese Ghost Story II". Fung Wang-yuen (22 September 1942 – 4 February 2014), better known by his stage name Wu Ma, was a Hong Kong actor, director, producer and writer born in Tianjin, Republic of China.  Wu Ma made his screen debut in 1963, and with over 240 appearances to his name (plus 49 directorial credits within a fifty-year period), he was one of the most familiar faces in the history of Hong Kong Cinema and best known as the Taoist ghosthunter in "A Chinese Ghost Story". A Chinese Ghost Story II (倩女幽魂 II：人間道) is a 1990 Hong Kong romantic comedy-horror film directed by Ching Siu-tung and produced by Tsui Hark.  It is the sequel to "A Chinese Ghost Story" and is followed by "A Chinese Ghost Story III". Tsui Hark (, born 15 February 1950), born Tsui Man-kong, is a Vietnam-born Chinese film director, producer and screenwriter.  Tsui has produced & also directed several influential Hong Kong films such as "A Better Tomorrow"; "A Chinese Ghost Story"; "Once Upon a Time in China"; and most recently, blockbusters such as "Detective Dee and the Mystery of the Phantom Flame", "Flying Swords of Dragon Gate" and "".  He is viewed as a major figure in the Golden Age of Hong Kong cinema and has been regarded by critics as "one of the masters of Asian cinematography." A Chinese Ghost Story, also known as A Chinese Fairy Tale, is a 2011 fantasy-supernatural film directed by Wilson Yip, starring Louis Koo, Liu Yifei, Yu Shaoqun, Kara Hui, Louis Fan, and Wang Danyi Li.  The film is adapted from one of the tales in Pu Songling's "Strange Stories from a Chinese Studio", a collection of supernatural stories set in ancient China.
Answer: Liu Yifei