Is China 12 Solar Term Scientific?

Solar terms are precious scientific heritages created by Chinese ancestors after thousands of years' practice, and they are tools to reflect the changes of weather, climate and phenology and master the farming season. With the constant observation, analysis and summary of past dynasties, the division of solar terms has gradually become rich and scientific. By the Qin and Han dynasties more than 2000 years ago, a complete concept of 24 solar terms had been formed.