The five one international Labour Day also known as" section five one", on May 1st every year. It is no world-class production team, working people's common holiday. You you this is rooted in the American city of Chicago workers strike. In May 1, 1886, Chicago Ershiyiwanliuqianyu workers for eight hours while the strike, after a bloody hard struggle, finally achieved victory. To commemorate this great labor movement, in 1889July, Second International declared May 1st each year as the international labor day. This decision immediately positive response from workers around the world. May 1, 1890, Europe and the United States to lead the working class to the streets, held a grand demonstration and assembly, for the legitimate rights and interests. From then on, every day working people around the world have to rallies, parades, to celebrate.