What's the climate like in Bengbu, Anhui?

I studied in Bengbu for four years. In winter, the temperature is usually around -3 to 3, and I am also afraid of the cold. 2004 is the coldest time, the coldest day temperature reaches-10 (outdoor), and other weather is about -4 to 0 degrees. It doesn't seem so cold in 2005, with an average of -3 to 3; 06, 07 and 05 are basically the same. If you are really afraid of cold, sweaters and sweaters with thick coats should be enough. I'm afraid of the cold, but it's about the same.

But winter nights are not suitable for overtime (if there is no air conditioning), because if a person is in a house of more than ten square meters, it will be very cold. After all, winter is still winter.