Let me give you a suggestion. Go to Taobao to buy a natural Chinese medicine called Lingxiang, a specialty of Guangxi. This thing has a particularly good moth-eaten effect on clothes and books, and its smell is Chinese medicine. The ancient books of Tianyi Pavilion in Ningbo, one of the four largest libraries in China, have not been destroyed for hundreds of years, and are eaten with wormwood to prevent insects. Very cheap things, you can buy several boxes for ten dollars, and a small box of pipes can get a wardrobe.