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You can contact the property staff, and then contact the owner upstairs through the property to solve the problem of kitchen sewage together.
It is not recommended to start from the perspective of superstition, but from the perspective of science and natural environment, we have the following views. >>>More
You can go to the relevant departments to complain, they will make a reasonable deal with it, if you can find them, after all, this is very unbearable.
It may be that there is water in the lock or the sun and wind blowing, and the lubricating part is too dry and inflexible, so it is recommended to remove the lock and apply lubricant to each moving part inside. Flexible rotation is fine.
Clean it up first. Then you can monitor it.
Between neighbors, harmony is precious.
Does your neighbor own a restaurant? I don't understand from your question. >>>More