Is it okay to sleep in this weather?

At present, in March, taking the northern city of Zhengzhou as an example, it is not suitable to sleep under the covers.

When sleeping, you should cover a breathable mat and blanket. The temperature difference between morning and evening is large. The temperature in Zhengzhou at night is about 1 1 degree. Covering yourself with a quilt will make you sweat at night. It is recommended to give priority to breathable blankets.