I rented on the second floor, the main pipe on the first floor was blocked, and the kitchen bucket o

This kind of thing is not easy to say, the main pipe blockage can not be determined whose reason, only the residents themselves can bear it, as for you and the landlord who will bear, I personally think that the landlord should bear it, but out of reason, you can't ignore anything, it's best to talk to the landlord well, if you have money, you can contribute something.

You can coordinate with the property management company to find out the reason among the residents on this side of the unit. If it is caused by the blockage of the chemical pool, it shall be borne by the property; If the responsible person cannot be found among the residents, the small losses will be counted, and the large losses will be taken to court through the judicial process to sue the other residents on the side of the unit and require them to bear the corresponding responsibilities.