How to disinfect books in rainy days

Drying calligraphy? Disinfect books with sunlight to prevent moth-eaten, damp and moldy.

Ultraviolet disinfection? Ultraviolet is a special kind of high-energy magnetic wave, which destroys the nucleic acid of microorganisms and achieves the purpose of disinfection.

Microwave disinfection? Wrap a small amount of books and materials with wet cloth and put them in a microwave oven with 650W power for 5~ 10 minutes.