My family lives on the 2nd floor of the building, and one day the toilet drain was blocked, and the

Sewers are public assets, not yours. So it's illegal. Is the whole building your house? >>>More

There is definitely a need for sewerage, and the first floor of the current building is sewered independently, and the second floor is the first to be affected by the blockage of pipes. It is recommended that after solving this problem, my family should spend some money to hire someone to install independent sewer, which is my family's experience, otherwise such problems will often occur.

Friends, remember to turn off the water valve every time there is a blockage, otherwise your house will become a sewage well... Below I write to you: >>>More

The drain pipe is too thin, and the drain pipe of the small high-rise is usually hung on the roof of the basement, you can make a hole in the ground and connect it to the main pipe separately. Or make a hole in the exterior wall of the kitchen and dig a trench in the outside floor and go directly into the drainage well.

Your kitchen is connected to the toilet, and when the oil is raised, flush it with boiling water and dish soap, and flush it more often.