Infinite Challenge
According to production company MBC: "Currently in China, multiple broadcasting and production companies are saying they are personally producing 'Infinite Challenge' or a similar program, causing a disturbance in the market and damaging MBC Contents' image. From hereon, excepting the broadcasting of 'Infinite Challenge' on CCTV1, we will take firm legal action against any behavior that has nothing to do with MBC while making people confused and misunderstand [that program] as MBC's 'Infinite Challenge."