The case also established that in considering copyrights of the individual elements, there must be a threshold of originality to be copyrightable.[37] A second key case in 2018 occurred when Woniu Technology, the creators of Taiji Panda, sued Tianxiang Company over their mobile game Hua Qian Gu as a reskinned clone of Taija Panda. While Tianxiang attempted to argue that the overall game could not be copyrighted, the court established precedence that a video game fell into the category of cinematographic works, and that the expression of gameplay can be copyrighted, establishing this principle in case law.[37]