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It's okay, as long as it's not a crack, this should be waterproof to test the water.
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If it's not a structural problem, it doesn't matter, some are cracked or hollowed out of the ash, and the ash is just refilled.
There must be a problem, it is better to check the drawings to see what kind of reinforcement.
If it is very serious, then we should find the relevant departments to discuss this problem with them, which belongs to their problems, they should take care of it, and they should give us a repair as soon as possible, so as not to leave us with trouble, right? Let him go to our house to take a look, if we want to leak seriously, then he has to pay for the loss more, our loss is serious, he has to cover us more, we want to lose less, he will pay us a little less, this is negotiable, this problem should also be solved, nothing difficult, you go to the property to discuss with them.
Tell the developer to set a time first, and what if the time is up, you haven't come to the media to see the developer.
The lighting is indeed not ideal, tearing down the walls to change the pattern, but this picture does not see which walls can be demolished.
It means that I didn't understand the picture when I bought the house, or the developer changed the design, either recognized it, installed a ventilation fan, or asked the developer to check out.