The traditional Chinese lunar calendar divides the year into 24 solar terms. More than 2,000 years ago, ancient Chinese people created this overall framework to mark the annual passage of time based on observations of the sun's motion. Nowadays, the 24 solar terms not only apply to farming, but also guide Chinese people in everyday life.

In 2016, the 24 solar terms were included in UNESCO's Representative List of the Intangible Cultural Heritage of Humanity. Watch this episode to find out more.