What is the lowest temperature in Dandong in winter?

1. I searched for (197 1-2000) in January, and the lowest temperature was -25.8 degrees. I don't know what year it was.

2. But from this report: "Kuandian was the lowest temperature in the same period in history on the morning of the 9th", which was -25.4 degrees Celsius-the reporter learned from Dandong Meteorological Observatory that on the morning of February 9th, 65438, Kuandian had a low temperature of -25.4 degrees Celsius. This is the lowest temperature in the same period since the meteorological record in our city. …………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………

3. There is no record. It may be the Quaternary Ice Age. Seventy or eighty degrees below zero.