The Law of the People's Republic of China on Protecting Against and Mitigating Earthquake Disasters was adopted at the 29th Meeting of the Standing Committee of the Eighth National People's Congress of the People's Republic of China on 29 December 1997. It came into force on 1 March 1998.

A translation of the text of the law can be found here.

The text in the panel bottom right panel calls for putting up the posters and spreading their message.