"The law of historical periodicity" refers to the cyclical phenomenon of China regime's ups and downs and chaotic control. Extreme unfairness leads to the collapse of society, thus achieving new relative fairness, and so on. In China, the extreme disparity between the rich and the poor is the driving force of the historical periodic law. The problem of historical periodic law was put forward by Mr. Huang Yanpei 1945 to Mao Zedong in Yan 'an. Mr. Huang Yanpei asked Chairman Mao whether China's * * * production party can jump out of its abrupt historical cycle law of prosperity and decline? Comrade Mao Zedong replied: Yes, this is democracy.