Article in English: Breathing through the scarf will warm the space between your face and the scarf. You will also exhale moisture into the space which will moisten the air. By warming and moistening the space, your sinuses won't have to produce as much moisture and your nose will not run. The air may be warm enough, but if it's too dry it may still trigger a runny nose. You can use individual room humidifiers or have a whole-house humidifier installed. This runny nose remedy will keep your nasal passages moist and help prevent you from over-producing mucus. It is not recommended to use this on a regular basis, but it okay to use now and then if you have important things to do in the colder weather and you don't want your runny nose to get the best of you. For instance, if you are a competitive skier, you may want to use a nasal spray before your race.  What it does is prevent fluid build-up for a little while, allowing you to complete your activity (such as the race) without worrying about your nose running.  However, it can sometimes cause more of a runny nose after the nasal spray wears off, so this is why it is not recommended to use on a daily basis.  If Dristan or another over-the-counter nasal spray is insufficient, see your doctor about the option for a stronger prescription corticosteroid nasal spray. Something like Sudafed (or anything with "pseudoephedrine" in the ingredients list) should work well. You can speak to the pharmacist for advice if you would like help choosing one.  Taking this type of medication will notably decrease the amount of mucus production in your nose, alleviating symptoms of runny nose from the cold. However, once again it is important not to use this frequently, as it can worsen your runny nose when the medication wears off. Therefore, only use it if there is something important you want to do in the colder weather, and it is important to you not to have your nose run for that period of time.

Summary in Chinese:
外出时，用羊毛围巾包裹住口鼻。 在室内打开加湿器。 通过给鼻腔喷生理盐水来湿润鼻腔。 试试药用鼻腔喷雾，像是德里斯坦（Dristan），或者其它含有假麻黄碱成分的药用喷雾。 服用非处方解充血药。