What is the coldest of the 24 solar terms?

Climatic characteristics: "Great Cold" occurs in the second half of Gregorian calendar 1 month and the second half of lunar calendar1February. It is the last solar term of the lunar year, which means that the coldest time of the year has arrived, but the temperature gradually rises from low to high, often starting from the last solar term, with an average temperature of -2-4℃ and a minimum temperature of-/kloc-. The extreme minimum temperature can be reduced to MINUS 20 degrees. The lowest temperature occurs in this solar term for half the year. The maximum frozen soil depth is 30-40cm, which is often the solar term with the deepest frozen soil in a year. Precipitation is scarce, with precipitation less than 1 mm in half of the years and more than 5 mm in some years. There are often cold waves and windy weather. Wan Li's icy northland scenery is particularly prominent in this solar term.