Marguerite Blanche was a Danish actress notable for her starring roles in British silent films.
 She was born in Copenhagen as Margaret Jessen, but emigrated to Britain where she made twelve films for director-producers such as Cecil Hepworth and Sidney Morgan.
 Her final film was Morgan's "The Woman of the Iron Bracelets" in 1920.
 Morgan then replaced her as the star of his films with his own daughter Joan Morgan.
Hwayi: A Monster Boy () is a 2013 South Korean action thriller film about a 16-year-old boy of the same name (played by Yeo Jin-goo) who is raised by five criminal fathers to become the perfect assassin.
 It takes pulling the trigger to discover his true identity after he realizes the mystery surrounding his past and his fate.
 It was the highly anticipated second feature film by director Jang Joon-hwan, a decade after his 2003 cult favorite sci-fi comedy/thriller "Save the Green Planet!
".
Little Dorrit is a 1920 British silent historical drama film directed by Sidney Morgan and starring Lady Tree, Langhorn Burton and Joan Morgan.
Lee Jae-yong (born March 21, 1963) is a South Korean actor.
 Best known as a character actor, Lee has played supporting roles in film and television, notably as a dogged ex-detective in Jang Joon-hwan's "Save the Green Planet!
" (2003) and an embezzling Joseon politician in "" (2011).
Jang Joon-hwan (born January 18, 1970) is a South Korean film director.
A Window in Piccadilly is a 1928 British silent romance film directed by Sidney Morgan and starring Joan Morgan, John F. Hamilton and James Carew.
 It was made at Twickenham Studios as an independent production by Sidney Morgan.
Sidney Morgan (2 August 1874 – 11 June 1946) was an English film director, screenwriter, producer and actor.
 He directed 45 films between 1914 and 1937.
 As an actor, he appeared in the Alfred Hitchcock film "Juno and the Paycock".
The Third Round (1925) was the second silent film adaptation of the Bulldog Drummond character, starring Jack Buchanan and Betty Faire, adapted by Sidney Morgan from the novel of the same name by H. C. McNeile, and directed by Morgan.
1987 is an upcoming South Korean political drama film directed by Jang Joon-hwan, starring Kim Yoon-seok, Ha Jung-woo, Yoo Hae-jin and Kim Tae-ri.
Save the Green Planet!
 (Korean title: 지구를 지켜라!
, "Jigureul Jikyeora!")
 is a South Korean film, written and directed by Jang Joon-hwan, released on 4 April 2003 .
 The movie mixes elements of multiple genres, including comedy, science fiction, horror and thriller.
 The basic story begins when the main character, Lee Byeong-gu, kidnaps another man, convinced that the latter is an alien.

Question: Jang Joon-hwan and Sidney Morgan, have which mutual occupation?
Answer: film director