Is it okay to wear a skirt when traveling at 5- 19 degrees in Ganlan?

You can't. You are not allowed to wear skirts when traveling in Gan Lan at 5 to 19 degrees, because it is relatively cold at 5 to 19 degrees, which may easily cause a cold, make your body's blood not circulate, and your legs exposed to the skirt will be attacked by the cold, resulting in chills, numbness, soreness and other symptoms.