Peking University Founder Company and the Red Chamber Research Institute discovered that Beijing Gaoshu Tianli Technology Co., Ltd. and Beijing Gaoshu Technology Co., Ltd. had copied and sold their copyrighted software, including Founder RIP, the Founder font library, and Fang Zhengwen software. In response, they commissioned employees of their subsidiaries to engage in transactions with the infringing companies under the guise of ordinary consumers. Evidence was collected through notarized purchases in coordination with notaries, after which the plaintiffs filed a lawsuit for copyright infringement. In the first instance, the Beijing First Intermediate People’s Court affirmed the legitimacy of this so-called “trap evidence collection” method, holding that it was not prohibited by law and should be admissible.