2. The offices of governments at all levels generally have report mailboxes, which can be used to leave messages. As long as your construction is feasible, don't worry that the leaders can't see it, and don't doubt the leaders' interest in receiving advanced suggestions and listening to the people.
3. Find the petition departments of governments at all levels and talk to the comrades in the petition departments about your ideas and suggestions.
4. Go directly to government leaders at all levels. Of course, there are some difficulties, but the possibility is not ruled out.
5. Other ways.
Legal basis: Article 41 of the Constitution of People's Republic of China (PRC) * * * China citizens have the right to criticize and make suggestions to any state organ or state functionary; Any state organ or state functionary has the right to lodge a complaint, accusation or report to the relevant state organ for illegal or dereliction of duty, but shall not fabricate or distort facts to make false accusations or frame up. For citizens' complaints, accusations or exposures, the relevant state organs must find out the facts and be responsible for handling them. No one can suppress it, and no one can retaliate. People who have suffered losses due to the infringement of civil rights by state organs and state functionaries have the right to compensation according to law.