Do China citizens need to declare when they leave the country after illegal guests have green cards?

China citizens do not need to declare when they leave the country after illegal guests have green cards. According to the Regulations on Exit and Entry Administration of the Ministry of Public Security of China, China citizens with foreign green cards need to go through exit and entry formalities, but they do not need to declare departure information to the public security bureau where they are registered. Therefore, China citizens do not need to declare their departure after illegal guests have green cards.