Water gives birth to all things in nature
Also forms numerous wonderful views
There is a kind of water, hidden deep underground
It's "groundwater"
A precious resource for our survival
22 March marks the 30th World Water Day
March 22-28 is the 35th China Water Week
The theme of this year's World Water Day is
"Cherish groundwater, cherish hidden resources"
How much do you know about groundwater?
+1