May Day first originated from the workers' strike movement in Chicago, USA in 1886. On May 1, 1886, an eight-hour strike movement broke out in Chicago, USA, and ended in workers' victory, declaring that the proletarian working people had won the victory and for themselves. Rights and interests were obtained. Later, in 1889, Engels proposed that May 1, when American workers strike, be designated as Labor Day to celebrate the victory of the proletariat. After the founding of New China, the Government Affairs Council of the Central People's Government designated May 1 as the legal Labor Day in December 1949.