 In June 2009, Yu founded the Quansheng Time Film and Television Company ().In December 2004, many news media reported that Yu Zheng—then a total unknown—was threatening to sue director Raymond Lee and the production company for the drama "Assassinator Jing Ke", because his name did not appear in the credits under either "story by" or "writer(s)".Lee did not respond, but writer Wang Qiuyu () published a long blog entry demanding Yu's apology, adding "Finally some sincere advices to Yu Zheng, a creator is not a businessman.