Rare frozen waterfalls and blue ice are seen in Jiuzhaigou, a famous scenic spot in southwest China’s Sichuan Province in recent days thanks to persistent low temperatures. /CFP Photo

Ice appearing blue is formed as air bubbles inside absorb other colors more efficiently than blue which has shorter wavelength, which only lasted for a dozen of days in the area. /CFP Photo

Currently, Jiuzhaigou is still closed to the public following a powerful earthquake last year, with ecological restoration underway. /CFP Photo

The scenic spot is expected to open gradually later this year. /CFP Photo