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Generally speaking, the quality of big brands is better, and those of small factories are worse.
It may be that the assembly in the water-based is broken, and you can find the same assembly and replace it.
Yes, if the water doesn't go down, it's blocked, and you can just use the toilet plug to get it.
Use the special glue and cement (and not too thin) to touch the joint of the pipe to solve the leakage.
The problem of tap water has nothing to do with your toilet, you can also see if the water in the sink is also dirty, and call the property.
There is less water accumulated in the toilet after the whole tank of water is flushed, so there is no ticking sound; Flush with a small amount of water, the water level in the toilet is high, and it will slowly drip into the downpipe, and you will hear a ticking sound, and after a few minutes, the water level will drop to a normal state, and it will stop ringing. In order not to make a sound after flushing, the water should not be too little, or increase the momentum of the water, so that a small amount of water can also have enough force to flush down, and the water surface is relatively low.