Legal analysis: 12345 is the government’s convenient telephone number. Citizens can use this number to supervise state agencies and their work. It is useful to call this number to complain.

Legal basis: According to Article 27 of the Constitution: All state agencies and state functionaries must rely on the support of the people, maintain close contact with the people at all times, listen to the people’s opinions and suggestions, and accept Under the supervision of the people, we strive to serve the people. According to Article 41 of the Constitution: Citizens of the People's Republic of China have the right to criticize and make suggestions against any state agency or state functionary; they have the right to criticize or make suggestions for any illegal or derelict behavior of any state agency or state functionary. The right to lodge complaints, accusations or reports to relevant state agencies, but shall not fabricate or distort facts to make false accusations. For complaints, accusations or reports from citizens, relevant state agencies must ascertain the facts and handle them responsibly. No one may suppress or retaliate. People who have suffered losses due to violations of civil rights by state agencies and state functionaries have the right to obtain compensation in accordance with legal provisions.