Now many provinces and cities have adopted the convenience hotline and the mayor's telephone. After the telephone is opened, the public will be provided with telephone services in Putonghua, Cantonese, English and other languages 24 hours a day, which will solve the problems that the telephone number of government departments is difficult to remember, the telephone is difficult to get through, and it is difficult to solve inquiries or complaints in time. The receptionist will directly answer questions about public telephone consultation using standard answers pre-entered into the database by various departments. Call charges are charged according to the standard of ordinary local calls. The telephone number 12345 is a popular livelihood hotline.