The living room is equipped with flower lanterns, and there is a buzzing sound

The living room LED headlights have a buzzing sound that is the current sound of the rectifier.

This is the air in the water pipe, you can ask the upstairs and downstairs neighbors, see where the water sounds, and this air is stored. When exhausting, you first close the main valve downstairs, let him turn on the faucet at home, and then slowly open the main valve, let the water flow above and exhaust until it is completely silent.

It's the outside sound coming in through some gaps that aren't sealed, and mixing and amplifying the various sounds.

You touch it with your hand to see that there is a small hole under the toilet bowl, and some toilet toilet holes are two, plug it with something and try again, my house is so good.

Toilets have ventilated areas, and when the wind blows in from outside, an air flow circuit is formed, and a buzzing sound occurs, like a whistle. Find out where the sound is coming from, seal it and eliminate it. Hope to adopt.