Rangers' uphill battle to save mountain wildlife

Patrol teams trek through deep snow to ensure animals get enough food to survive the tough northern winter. Liu Mingtai reports from the Changbai Mountains, Jilin province, with Li Hongyang in Beijing.

As people across Northeast China were celebrating Spring Festival and preparing to welcome warmer days, life was still hard for wild animals in the Changbai Mountains National Nature Reserve.

In winter, they have to scratch around the frozen ground to find enough food to survive.