A: The core of Rousseau's naturalism education is "returning to nature". He believes that everyone is trained by natural education, food education and artificial education. Only the successful combination of the three kinds of education can achieve the expected goal. However, the manpower of natural education can't be controlled, so it is impossible to make natural education close to physical education and artificial education. Only when the latter two tend to be consistent with natural education can we achieve a good combination of the three kinds of education. Therefore, education "belongs to nature", that is, education based on nature is a good and effective education. The "natural education" advocated by Rousseau is a challenge to the society under the autocratic system and its education that harms human nature. "Returning to nature" and conforming to nature are the goals and fundamental principles of innovative education.