Arnold Schwarzenegger and Jackie Chan made a movie with a giant CGI dragon

Arnold Schwarzenegger and Jackie Chan co-star in a fantasy movie inspired by a 19th-century Russian novella, featuring a giant CGI dragon.

The Iron Mask is actually a sequel to another movie, named Viy after the Nikolai Gogol novella. The Iron Mask (aka Viy 2: Journey to China) is a Russian/Chinese fantasy adventure movie starring Jason Flemyng in the lead role as explorer Jonathan Green. Jackie Chan and Arnold Schwarzenegger actually play supporting characters,  the trailer features them pretty heavily.