Known as "the roof of the world," southwest China's Xizang Autonomous Region is deemed the "water tower" of Asia, a climate regulator and gene pool of the planet Earth. It is also one of the regions with the richest biodiversity on earth. 

Since ancient times, the black-necked crane has been deemed as an auspicious bird by local people who call it "fairy crane" or "divine bird". 

Every winter, flocks of the crane under first-class state protection in the country fly to the plateau in Xizang. How do they spend the winter here? Watch this video to find out! 

(Cover image via CFP)