Spread positive energy. There are many popular videos on the platform, among which some people publish the design of hammer and sickle, which are symbols of the Soviet Union and used to represent * * * industrialism or scientific socialist organizations. Hammer is used to knock, symbolizing workers, and sickle is used to harvest, symbolizing farmers. The combination of these two tools represents the unity and cooperation between workers and farmers. In China, it produced the origin of China's * * * production party, which spread the positive energy of hard struggle and people's struggle at that time, and always followed the party.