What does the nickname of autumn WeChat mean in 20 years?

The twentieth autumn is 20 years, and there are four seasons in a year: spring, summer, autumn and winter. After the four seasons, it is a year, once a year. When an autumn comes, it is a year, and twenty autumn is twenty autumn, which is twenty years.

Autumn is one of the four seasons. China has traditionally regarded the cold dew in the 24 solar terms as beginning of autumn. Entering autumn means that precipitation and environmental humidity tend to decrease or decrease. In nature, everything develops from lush to sunny and perfect. Early autumn is still hot, not summer. It is the period with the largest average temperature in a year, which is wet, cold and hot.