It's Mao Zedong! 1930 in may, Mao Zedong pointed out brilliantly in the article "against bookishness": "in this increasingly acute hand-to-hand combat situation, the proletariat can only win by relying on the correctness and determination of its political party * * * to produce the party. * * * The correct and unshakable struggle strategy of the production party is by no means a few people sitting in the room, which means that it can only be produced through practical experience. Therefore, we need to understand the social situation from time to time and conduct actual investigations from time to time. " He also stressed: "The victory of China's revolutionary struggle depends on Comrade China's understanding of China. Without investigation, there is no right to speak ",which is a famous saying put forward by Mao Zedong in his article Against Bookishness.