Border guards patrolling along the boundary river of north China's Inner Mongolia

Photo taken on Jan. 5, 2021 shows the border guards of the Shiwei Border Police Station of the Hulunbuir Border Management Detachment patrolling along the country border, north China's Inner Mongolia Autonomous Region, to ensure the safety and stability of the border and prevent the import of overseas pandemics. In the past few days, the Shiwei area of Inner Mongolia ushered in a new round of cooling weather, the boundary river was frozen, and the minimum temperature dropped to as low as -40°C. (Lu Haojun/Guangming Picture)