What's the weather like in Datong, Shanxi at the end of April?

This time is the most unstable weather in Datong. If there is no cold current, the daytime temperature is about 18-20 degrees, and the temperature difference at night is about 5 degrees. Boys can wear long-sleeved T-shirts, jeans or suits. When girls wear suits and skirts, or shirts and coats, they still have to wear long sleeves. If there is a cold current crossing the border, you have to wear more clothes, and you should wear cotton trousers inside.