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See if there is one or several, if there is one, then: there is a problem with the toilet here, suspend the use, and clean it to the xx place.
If there are several, then tell: just stop using.
Hydrogen peroxide can remove the pigmentation caused by organic matter, and has the functions of bleaching and degreasing, but it has a certain corrosiveness.
In order to save money.
Find the source of hot water, if there is an opening in this place, open it and see if you can put it. If the water can be released, it will be blocked in one or more places from under the opening to the faucet. Find out the blockage and dredge it. >>>More
If there is no water due to the suspension of the tap water, the pipe is blocked or the outlet of the flush is blocked, so please solve it by the elimination method. >>>More
The "water level of the toilet drain at home is always at a certain level" that you see should be the water level in the toilet, and its decision is determined by the S-shaped water storage play of each toilet. The height of each toilet is about the same as that of the S-bend. >>>More