Extreme cold weather has spread across much of China, marking the real arrival of winter. North China's Inner Mongolia recorded a temperature of minus 45 degrees.

Extreme cold weather has spread across much of China, marking the real arrival of winter.

Inner Mongolia is usually the first part of the country to experience cold fronts from Siberia. Fog has decreased visibility to less than 50 meters in some cities. A 400 kilometer section of the Yellow River is frozen.