parade, to show to celebrate.The Chinese people celebrate the activity of the Labor Day and can trace back to to 1918.Is a year, etc. of some knowledge members of revolution at Shanghai, Suzhou ground sends forth to introduce toward crowd"51" of handbill.On May 1 in 1920, worker's crowd of etc. of Peking, Shanghai, Guangzhou city goes into the street to hold the huge parade of threatening force and hold a meeting.After new China establish, our country in December of 1949 will"51" settle for the legal Labor Day."51" night before lasts of 1921, the long and hot store labor extension school that summer waits for someone to establish in the communism group of Peking member 邓 in, the workers learn to sing 《 51 memorial songs 》 .Its lyrics is:" The beautiful freedom, the star of world, puts together me red-blooded, sacrifice for him, want to sweep away the force system everything clean, remember the beautiful day of May first.The red flag dance in the wind,