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Caused by the shaking of the building. Or it is caused by the resonance phenomenon caused by the shock wave.
Is there no symptom on the wall of the third floor? Is your building structure brick concrete or framed? >>>More
If there is a lot of pressure and too little water, there will be such a problem.
WiFi is a wireless electromagnetic wave that radiates and propagates in a straight line around it. Any object blocking will weaken the WiFi signal, especially metal. >>>More
Problems arise in three locations.
First, there is no windproof plug installed in the exhaust outlet of the home. >>>More
If you don't like snails to climb into the house, observe which wall the snail climbs into, sprinkle a layer of salt on the ground at the place of entering the house, get it a few more times, and the snail will basically not crawl in.