Does the camera need a cotton cover in winter in Northeast China?

The climate in Northeast China is relatively normal this year. I mean, the snowfall and temperature are relatively normal. Northeast. In the hearts of the people all over the country, it should be "a thief is cold and a thief is cold." Because of the low temperature, there are many beautiful scenery. According to the temperature situation this year, outdoor photography needs to wear a cotton cover. Otherwise, the change of indoor and outdoor temperature difference may cause the lens in the lens to burst, fog and condense. No matter how beautiful the scenery is, we should also protect the equipment. I wish you a happy photography.