I think the main reasons for China's economic growth from 1952 to 1957 are: 1. After the founding of the People's Republic of China, the people were masters of their own affairs, and their labor enthusiasm was high. 2. The change of ownership promotes the development of production. 3. The exemplary leading role of advanced figures. 4. Effective national policies. I think of these items, of course, depending on the score of this question, because the answer is definitely determined by the score.