Yu Jiahua, head of the patrol team, drills a hole into a frozen river to get water to wash vegetables when the team stops for meals at one of their camps on their patrol route on Jiudingshan mountain in Maoxian county, Southwest China's Sichuan province, on Dec 2, 2015.. The closest river is 500 meters away. At some other camps on the route, it takes a long time to find dry branches to start a fire to cook meals. [Photo/VCG]