In the context of public deposit insurance organizational models, several interesting questions arise: Why does China's Deposit Insurance Corporation consistently lean toward the cooperative institution model, which is closely aligned with the central bank? Despite fervent advocacy for the independent institution model by the IADI and the U.S. Why does the unwavering stance exist? Is the choice of the cooperative institution model an "ignorant solution" or an "optimal solution" in China? Our work answers these questions for the first time, and we argue that it is the "optimal solution" that po...