The Spring Equinox, or Chunfen in Mandarin, is the fourth solar term of the Chinese lunar calendar, falling on March 20 this year. On this day, the sun is exactly above the equator, marking the equal length of day and night. According to ancient Chinese people's observations, after this day, the migrating birds will be returning to the north, and plants become lusher with the help of increased rainfall. 

Watch this video provided by Weather China, the online weather service of the China Meteorological Administration, to find out more.

(Cover image is a screenshot.)

(If you want to contribute and have specific expertise, please contact us at nature@cgtn.com.)