In the Wei and Jin dynasties, there was a record of "telling Shangshu Town about cattle confusion, crossing the river in mid-autumn and evening". It was not until the early years of the Tang Dynasty that the Mid-Autumn Festival became a fixed festival. The Book of Emperor Taizong recorded the Mid-Autumn Festival on August 15. The prevalence of Mid-Autumn Festival began in the Song Dynasty, and it became one of the major festivals in China in the Ming and Qing Dynasties. This is also the second largest traditional festival in China after the Spring Festival.