October 24th this year marks the 30th anniversary of the rise of the technical cooperation activities of workers known as the great pioneering work of the Chinese working class. In the early 1960s, just as China was suffering from serious natural disasters and was temporarily locked in by economic and technological blockade, three comrades, including Wu Jiazhu, Lin Haifeng and Wu Dayou, advocated, model workers, advanced figures and skilled craftsmen and experts. The teachers consciously connected in tandem and initiated the technical cooperation activities of the employees. They were not worthy of the name, they were not profitable, and they only focused on socialism. 30 years,