The toilet drain upstairs in the bathroom is PVC, and the upstairs is poked with an electric dredger

Wipe the leak point dry, apply the leak plug to the leakage, wrap it with tape, and dry it before use.

Accidentally broken, the pig iron pipe is in the water, there is no pressure, the surface is dried with sandpaper, the glass glue is touched, the can is cut open, glued to the outside, and tied with a rope. 48 hours to take down the rope, it's over.

The drainage pipes in the building are indispensable, and some vertical pipes pass through the residents' houses, and the same is true for the top floor, because the pipes that drain down must be ventilated up and down, otherwise the water will not flow because of atmospheric pressure, so the drainage pipes must be ventilated to the roof. Two 10 cm drains in your bathroom may not be well designed, but the drains can be designed inside the wall. I've also seen large water pipes pass through the residents' bathrooms, but they are hidden by a raised rectangular wall, at least not as ugly as the two bare thick pipes, and the area occupied by this 'rectangle' should be deducted from the area of your house, that is to say, you don't pay for the house in this area, haha·· However, this is a matter of consultation with the seller. >>>More

The drain pipe in the bathroom does not leak and water bubbles out, indicating that the sewer pipe is blocked, and it should be dredged quickly.

This must be the responsibility of the upstairs, as long as the plumbing in the common area is considered property maintenance. If the upstairs does not admit it, the negotiation fails, and you can only go to the court to sue for settlement.