The August 19th Incident, also known as "Soviet coup" and "August coup", refers to a coup in the Soviet Union from August 199 1 year to August/2 1 year. At that time, some officials of the Soviet government tried to abolish President Gorbachev and gain control of the Soviet Union. The coup was a hard-line member of the Soviet Union. They think Gorbachev's reform plan has gone too far, and the new alliance treaty he is negotiating and signing is too scattered to give power to the republics. Although the coup collapsed only three days later and Gorbachev returned to power, this incident shattered Gorbachev's hope that the Soviet Union could at least remain integrated under a more relaxed system.

During the Spring and Autumn Period and the Warring States Period, with the gradual decline of old slavery and kingship, a large number of thinkers representing various ideas emerged in various vassal States. They put forward their own understanding and opinions on society, put forward an ideological system to solve social problems, and debated, integrated, adjusted and differentiated each other, gradually forming a situation in which a hundred schools of thought contend.

Usually, the historical period when an old stable institutional system is gradually declining and a new stable institutional system has not been established is often the period when ideas are the most active and all kinds of new ideas are competing for germination, development and competition. After a period of competition, integration and development, a stable new institutional system is born again.