Yes, Dalian is quite trendy. When you go home on holiday, you can keep your clothes like this: clean and dry them, then pack them in plastic bags you gave when you bought them, seal your mouth with tape and put them in the closet. The same is true for bedding. After drying, put it in a big plastic bag and seal it. Don't store water in thermos bottles and cups. Even other things that are afraid of long hair are wrapped in newspapers. Charcoal and lime powder are both good methods, but where can students buy those things? I bought it several times, but I can't use it anymore. Besides, it is impossible for students to leave the window open. Therefore, after taking the above measures, before moving into the school, we should take out the bedding and dry it before using it.