During this period, the whole nation and all Chinese institutions abroad should fly flags at half mast to express their mourning, stop public entertainment activities, and the Foreign Ministry and all Chinese embassies and consulates abroad should set up books of condolence. Starting from 14:28 on May 19, the whole nation would observe three minutes of silence, and at that time, cars, trains and ships would sound their horns and air-raid sirens would wail. The Wenzhou municipal government office issued an urgent notice last night on implementing the State Council's announcement of a national day of mourning, requiring all localities and departments to earnestly implement the spirit of the announcement and quickly get relevant organizational implementation work done.