This kind of weather in Guangzhou is very humid, and now it is rainy season. There are many moldy places at home, mainly wardrobes. This makes me very upset. -

Because it is colder indoors than outdoors, the weather is getting warmer, and the building itself has a temperature, and its temperature is low, so when it is cold, the moisture in the air is easily condensed indoors, not the water seeping from the floor and walls (as the saying goes).

So it's best not to open the window. If the door can be opened, it won't open.

Desiccant, activated carbon and dehumidifier can be used.