Staff of emergency management bureau of Ruyang County prepare emergency relief supplies for the extreme weather in Luoyang City, central China's Henan Province, Dec. 11, 2025.

The National Meteorological Center on Wednesday issued a blue alert for a cold wave and a separate blue alert for strong winds, forecasting a widespread drop in temperatures and the first large-scale snowfall this winter across northern China over the next few days. (Photo by Kang Hongjun/Xinhua)