Monster Hunt (2015) was the highest grossing film of all time in China, as of September, 2015. It was surpassed by The Mermaid (2016) the following February.
As of September 11, 2015, the total box-office is 2,428,590,000 RMB.
The plot is very similar to the Men in Black (1997) series (i.e. aliens [now monsters] hide in human skin while being hunted).
Lead actor Kai Ko was arrested in Beijing for drug charges (marijuana) resulting in the recasting of his role by actor Boran Jing. This required re-shooting of 70% of the film and 25% of the computer animation. In total, the film took 7 years to complete.