How did the humidity on the first floor come from?

Moisture regain is a natural phenomenon. When the air humidity is high, a lot of water will be attached to the ground and articles. Or the underground moisture rises, and the ground and wall roots are wet. Every year after beginning of spring, some areas will have the phenomenon of indoor humidity and water coming out, which makes clothes and furniture damp and moldy, which is often called "southerly day".

The high indoor moisture regain in spring is because the temperature of indoor walls and floors drops day by day after winter. After spring, the indoor heating rate is slower than that outside. When the outdoor air suddenly rises sharply and is very humid, it will condense into small water droplets on the cold ground and walls, and even form a flowing water layer. If it is cloudy in the morning, the weather is too warm and there is a strong south wind, there will be a resurgence that day.

Extended data:

The reappearance of weather is very harmful to human health. In humid climate, sweat can't be completely absorbed by the air, and it gathers on the skin surface, which leads to the increase of body temperature and destroys the heat balance of the body. Humidity can also crack oily skin.

In humid weather, people are prone to headaches, ulcers, rashes and other diseases. People often feel bored, which will affect people's blood pressure, erythrocyte sedimentation rate and urine output. Some people are depressed and depressed, children often cry, make noise or shout, women prefer nagging, have a worse temper, and their sexual desire is weakened, while neurotic patients feel irritable, insomnia and even impulsive behavior, and the symptoms of depressed patients will be more serious.

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