Started at 1979. Inquired by pingnan county Education Bureau, it is known that the first batch of sixth grade in pingnan county started from 1979. At the beginning of 1970, based on the concept of "education should be revolutionized and the length of schooling should be shortened", the six-year primary school system was changed to five-year primary school system. Pingnan County is located in the southeast of Guangxi Zhuang Autonomous Region and the northeast of Guigang City.