"Chunfen" is one of the 24 solar terms, it usually on March 20-21, which literally means Spring Equinox or Vernal Equinox.

A villager plants potatos in a farmland in Weining County, southwest China's Guizhou Province, March 20, 2016.

A villager plants corns in a peach orchard in Sanjiang Village of Kaili City, southwest China's Guizhou Province, March 20, 2016.

A villager sprays fertilizer in a farmland in Hushan Village of Jing'an County, east China's Jiangxi Province, March 20, 2016.

Villagers work in a greenhouse of watermelons in Xuzhuang Village of Shiping County, east China's Shandong Province, March 20, 2016.

A villager works in a farmland in Caoshan Village of Jing'an County, east China's Jiangxi Province, March 20, 2016
 

A villager works in a farmland in Yong'an Village under Dongmen Town of Luocheng County, south China's Guangxi Zhuang Autonomous Region, March 20, 2016.
 

A villager works in a farmland in Xiyu Village of Zaozhuang City, east China's Shandong Province, March 20, 2016.