PHOTOS Coldest day of winter

A car is stuck in heavy snow in Gwangju, 270 kilometers south of Seoul, Dec. 23. Yonhap

Water is iced over at a rocky seashore of Busan as the temperature falls, Dec. 23. Yonhap

Two cars are covered in snow in Gwangju, Dec. 23. Yonhap

A traveler looks at a flight chart at Jeju International Airport, Dec. 23. Most of the flights departing from and arriving on Jeju Island were canceled. Yonhap

People wearing winter coats and hats line up at a bus stop in Seoul, Dec. 23. Yonhap

Elementary school students in Jeonju, North Jeolla Province, walk to school through the accumulated snow, Dec. 23. Yonhap

An express bus is overturned on Honam Expressway near Gokseong, South Jeolla Province, Dec. 23. Yonhap

Roe deer look for food in the middle of a snowy field on Jeju Island, Dec. 23. Yonhap

The area around a water solar power array installed in Hwaseong, Gyeonggi Province, is seen frozen, Dec. 23. Yonhap