High frozen lakes melt under spring sun

With the seasonal rise in temperature at Changbai Mountain Nature Reserve in Yanbian county, Jilin province, frozen Tianchi Lake has begun to melt.

Changbai Mountain, which borders the Democratic People's Republic of Korea, remains frozen for most of the year. It has long been a major tourist destination in all seasons.

The lake, located at the top of the volcanic cone of the main peak of Changbai Mountain, is the highest, largest and deepest active crater lake in the world.

Changbai Mountain Nature Reserve began to reopen on Thursday and will be free to the public until June 27.

Tourists can only enter the resort after booking online, and the number of tourists will be strictly limited.

Tourists are required to scan their health codes when entering, and masks and temperature checks are mandatory.