What do you mean, the Immigration Bureau has no reservation index?

Immigrants have no reservation index, which means that the reservation index is full. The National Immigration Bureau bears the brand of People's Republic of China (PRC) and People's Republic of China (PRC) Exit-Entry Administration and is managed by the Ministry of Public Security. The main responsibility of the National Immigration Bureau is to coordinate the formulation of immigration policies and organize their implementation. With the opening of online booking by the Immigration Bureau, when the booking index is full, the Immigration Bureau will display the results without booking index.