Chinese action film "The Underdog Knight 2," directed by Ding Sheng and featuring Chinese actor Liu Ye, is now filming in Qingdao, Shandong Province, mtime.com reports.

Liu Ye plays Laosan, the same role as in "The Underdog Knight" (2008). Laosan is a veteran who used to serve in the navy on a submarine. After leaving the navy, he trained hard in kung fu to stop bad guys in the city.

Laosan stands out among civilians as he always dresses in a military uniform and carries his favorite weapon, a red-tasseled spear.

In the sequel, Laosan starts a relationship with a girl instead of a secret admirer, as in the first film. Zhang Xinglin, who played Laosan's girlfriend in the film, is the 57th Miss World winner from the 2007 competition held in Sanya, China.

In "The Underdog Knight 2," Laosan fights international criminals to protect a national treasure from being stolen during an exhibition. He also rescues his girlfriend from kidnappers.

The first film was based on the true story of a veteran Chinese submarine sailor.