Question: What profession is practiced by both Craig Serling and Zhang Yimou?

Context paragraphs:
Zhang Jianya: Zhang Jianya (, ] ) (born 1951) is a Chinese film director.  As a graduate of the 1982 class of the Beijing Film Academy, Zhang is a founding member of the so-called Fifth Generation, a group that also includes in its numbers directors such as Zhang Yimou, Chen Kaige, and Tian Zhuangzhuang.

Keep Cool (film): Keep Cool () is a 1997 Chinese black comedy directed by Zhang Yimou and adapted from the novel "Evening Papers News" by Shu Ping.  The film about a bookseller in love in 1990s Beijing, marked a move away from earlier period pictures of Zhang's earlier work to a more realistic Cinéma vérité-like period in his career that also saw him make "Happy Times" (2000) and "Not One Less" (1999).  "Keep Cool" also marked only the second time Zhang placed his film in the modern era and the first time Zhang did not work with actress Gong Li.

A Simple Noodle Story: A Simple Noodle Story (), internationally A Woman, a Gun and a Noodle Shop.  (Blood Simple in the UK) is a 2009 film directed by Zhang Yimou.  It is inspired by "Blood Simple", the 1984 debut of the Coen brothers, whose films Zhang Yimou lists as among his favorites.  The film transports the original film's plot from a town in Texas to a noodle shop in a small desert town in Gansu province.

To Live (1994 film): To Live, also titled Lifetimes in some English versions, is a Chinese film directed by Zhang Yimou in 1994, starring Ge You, Gong Li, and produced by the Shanghai Film Studio and ERA International.  It is based on the novel of the same name by Yu Hua.  Having achieved international success with his previous films ("Ju Dou" and "Raise the Red Lantern"), director Zhang Yimou's "To Live" came with high expectations.  It is the first Chinese film that had its foreign distribution rights pre-sold.

Zhang Yimou: Zhang Yimou ( ; born 2 April 1950) is a Chinese film director, producer, writer and actor, and former cinematographer.  He is counted amongst the Fifth Generation of Chinese filmmakers, having made his directorial debut in 1987 with "Red Sorghum".

Zhang Junzhao: Zhang Junzhao (; born 1952) is a Chinese film director and screenwriter who was mainly active in the 1980s.  A graduate of the Beijing Film Academy and a contemporary of such acclaimed directors as Zhang Yimou, Chen Kaige, and Tian Zhuangzhuang, Zhang Junzhao was a prominent early member of China's Fifth Generation filmmakers.  His 1984 film "One and Eight" ("Yi ge he ba ge") is well known as a film that marked the advent of the Fifth Generation, while "The Shining Arc" (弧光; "Hu guang", 1988) was nominated for the Golden St. George award at the 1989 Moscow International Film Festival.

Craig Serling: Craig Serling is an American film director, film producer, screenwriter, and television editor known for multiple Primetime Emmy nominations for 'Outstanding Picture Editing for Non-Fiction Programming' and for his 2006 directorial debut feature film "Jam".

Hou Yong (cinematographer): Hou Yong (; born 1960) is a Chinese filmmaker and cinematographer.  He is perhaps best known for his collaboration with director Zhang Yimou, though he has worked with many of China's major directors.  Like some of Zhang's other cinematographers (notably Lü Yue, whom Hou replaced), Hou has also moved into the directing world.  In 2004, he directed "Jasmine Women" starring Zhang Ziyi.

The Flowers of War: The Flowers of War () is a 2011 Hong Kong/Chinese historical drama war film directed by Zhang Yimou, starring Christian Bale, Ni Ni, Zhang Xinyi, Tong Dawei, Atsuro Watabe, Shigeo Kobayashi and Cao Kefan.  The film is based on a novella by Geling Yan, "13 Flowers of Nanjing", inspired by the diary of Minnie Vautrin.  The story is set in Nanking, China, during the 1937 Nanking Massacre in the Second Sino-Japanese War.  A group of escapees, finding sanctuary in a church compound, try to survive the plight and persecution brought on by the violent invasion of the city.

One and Eight: "One and Eight" constituted an early collaboration between the graduates of the 1982 class of the Beijing Film Academy (notably classmates Zhang Junzhao and Zhang Yimou).  As such it is often considered one of the first films to move towards the more artistic and experimental mentality that is the hallmark Chinese cinema of the 1980s.

Supporting paragraphs: Craig Serling Zhang Yimou
Answer: film director