Question: What job do both Norman Thaddeus Vane and Jia Zhangke have in common?

Context paragraphs:
Cry Me a River (film): Cry Me a River (河上的爱情 "Heshang de aiqing", literally "love on the river") is a 2008 short film directed by Chinese filmmaker Jia Zhangke.  The film is a romance recounting the reunion of four college friends and lovers after ten years.  The leads are played by Jia regulars Zhao Tao and Wang Hongwei, and Hao Lei and Guo Xiaodong, who starred together in Lou Ye's 2006 film "Summer Palace".  Jia has stated that he was inspired by the classic Chinese film "Spring in a Small Town", also about the reuniting of former lovers in a rural river town in eastern China.

Jia Zhangke: Jia Zhangke (born 24 May 1970) is a Chinese film director and screenwriter.  He is generally regarded as a leading figure of the "Sixth Generation" movement of Chinese cinema, a group that also includes such figures as Wang Xiaoshuai, Lou Ye, Wang Quan'an and Zhang Yuan.

Midnight (1989 film): Midnight is a 1989 American thriller-horror film written and directed by Norman Thaddeus Vane and starring Lynn Redgrave and Tony Curtis.

Shadow of the Hawk: Shadow of the Hawk is a 1976 American horror film directed by George McCowan and written by Norman Thaddeus Vane and Herbert Wright.  The film stars Jan-Michael Vincent, Marilyn Hassett, Chief Dan George, Pia Shandel, Marianne Jones and Jacques Hubert.  The film was released on July 14, 1976, by Columbia Pictures.

Frightmare (1983 film): Frightmare (also known as The Horror Star and Body Snatchers) is a 1983 American slasher-horror film written and directed by Norman Thaddeus Vane.  It was Jeffrey Combs' horror film debut.

Norman Thaddeus Vane: Norman Thaddeus Vane (July 7, 1928 – May 2, 2015) was a screenwriter, producer, playwright and film director.  He served as writer for the 1968 film "Mrs. Brown, You've Got a Lovely Daughter", and in the subsequent year was writer and associate producer of the movie "Lola".  He wrote the screenplay for the 1972 film, "".  Vane went on to direct the 1983 film, "Frightmare", and continue contributing to writing films including "The Black Room" in 1984.

The Black Room (1982 film): The Black Room is a 1982 American horror film directed by Elly Kenner and written and co-directed by Norman Thaddeus Vane.  It stars Stephen Knight, Cassandra Gava, Jimmy Stathis and Clara Perryman, and features Christopher McDonald and Linnea Quigley in small, early roles.  The plot concerns siblings who lure swingers to their Hollywood mansion, kill them, then - with long scenes of blood transfusions - drain their blood.  Though there is no classical vampirism in the film --in the sense of supernatural beings or blood drinking-- the plot's focus on draining blood to prolong life has led to many sources considering it a vampire film.

Dong (film): Dong () is a 2006 documentary film by Chinese director, Jia Zhangke.  It is the companion piece to Jia's "Still Life", which was released concurrently although "Dong" was reputedly conceived of first.  The film, which runs a relatively short 66 minutes, follows the artist and actor Liu Xiaodong as he invites Jia to film him while he paints a group of laborers near the Three Gorges Dam (also the subject of "Still Life") and later a group of women in Bangkok.  The film was produced and distributed by Jia's own production company, Xstream Pictures, based out of Hong Kong and Beijing.

Wang Hongwei: Wang Hongwei (; born in Anyang, Henan) is a Chinese actor.  Wang is perhaps best known for his work with director Jia Zhangke.  The two men were classmates at the Beijing Film Academy when they began their professional relationship, with Wang starring in Jia's breakthrough short film "Xiao Shan Going Home" in 1995.  Since then, Wang has had roles in nearly all of Jia's films, including starring roles in Jia's debut "Xiao Wu" and follow-up, "Platform".

Useless (film): Useless () is a 2007 documentary film directed by Jia Zhangke.  It is Jia's second full-length documentary film after 2006's "Dong".  The film follows China's fashion and clothing industry.  The film was produced by Jia Zhangke's own Xstream Pictures, in association with the China Film Association and the Mixmind Art and Design Company.

Supporting paragraphs: Norman Thaddeus Vane Jia Zhangke
Answer: film director and screenwriter