May 1,2010: The opening ceremony of the 2010 Shanghai World Expo is held

May 1, 1920: Commemorative special reports and articles are published to celebrate May Day, International Labor Day
May 1—9, 1925: The Second National Labor Congress and the First Farmers Congress in Guangdong Province are held simultaneously in Guangzhou
May 1, 1941: A policy agenda for the Shaanxi-Gansu-Ningxia border region is formally published in "New China News"
May 1, 1942: Japanese troops carry out a savage attack in central Hebei, implementing the policy of burning, killing, and stealing
May 1, 1947: The Inner Mongolia autonomous government is established, and Ulanhu is elected chairman
May 1, 1950: The CPC Central Committee issues "instructions on carrying out the rectification campaign in the entire Party and army"
May 1, 2010: The opening ceremony of the 2010 Shanghai World Expo is held
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- CPC expels former head of insurance company