The toilet is bubbling, and the property says that it is caused by the diversion downstairs, who is

Of course, it is still to find a property to solve. The property has repair workers and has also signed a renovation agreement with the downstairs neighbor. And it's time to take their deposit.

You can also go to the neighborhood committee and ask for the problem to be resolved. It is better for them to come forward and not hurt the harmony of the neighbors.

This situation is that the sewer is blocked and not completely blocked It will not be the design reason, if it is the design reason, you will find that there is a problem when you start using it, not two years later Under normal circumstances, after the upstairs water is used, the water flows down the sewer and flows into the underground sewer pipe in the form of gravity flow After the blockage in a certain position, the water flowing down by gravity rises after being resisted, and gushes out along the place where the pressure is light. Find a property to dredge the elimination, it will be fine I remembered a situation, the top of the sewer (on the roof) has a noisy bridge key outlet, go check if it is blocked After I answered, I remembered a reason, and I will not change it before For reference.