Filming of "The Forbidden Kingdom", Chan's first on-screen collaboration with fellow Chinese actor Jet Li, was completed on 24 August 2007 and the movie was released in April 2008. The movie featured heavy use of effects and wires. Chan voiced Master Monkey in "Kung Fu Panda" (released in June 2008), appearing with Jack Black, Dustin Hoffman, and Angelina Jolie. In addition, he has assisted Anthony Szeto in an advisory capacity for the writer-director's film "Wushu", released on 1 May 2008. The film stars Sammo Hung and Wang Wenjie as father and son.