On this day, 139 years ago, May 1, 1886 (March 28, 1886, the lunar calendar), workers in Chicago went on strike-the origin of "May Day." May Day International Labor Day, also known as "May Day", falls on May 1st every year. It is a common festival for workers and working people around the world. This festival originated from the general strike of workers in Chicago, USA. On May 1, 1886, more than 216,000 workers in Chicago held a general strike to implement an eight-hour working day. After arduous and bloody struggle, they finally won. To commemorate this great workers 'movement, in July 1889, the Second International announced that May 1st of each year would be International Labor Day. This decision received immediate positive responses from workers around the world. On May 1, 1890, the working class in European and American countries took the lead in taking to the streets to hold grand demonstrations and rallies to fight for legitimate rights and interests. From then on, working people from all over the world will gather and march every day to celebrate. The celebration of Labor Day by the China people dates back to 1918. That year, some revolutionary intellectuals distributed leaflets introducing May Day to the masses in Shanghai, Suzhou, Hangzhou, Hankou and other places. On May 1, 1920, workers in Beijing, Shanghai, Guangzhou, Jiujiang, Tangshan and other industrial cities marched to the markets and held massive marches and rallies. This was the first May Day in the history of China. After the liberation, the Government Council of the Central People's Government designated May 1 as the statutory Labor Day in December 1949, which was a national holiday. Festivals are celebrated across the country. People change into festive costumes and gather happily in parks, theaters, and squares to participate in various celebration gatherings or cultural, sports and entertainment activities, and commend workers who have made outstanding contributions.