Consequences of buying a house with fake social security

I want to make two points. First, social security.

Property buyers want to stipulate that social security must be at least one grade before they can buy a house in Chongqing. This is easier to do. To put it bluntly, it is a fake social security certificate. You can do this at will. It doesn't matter, because I only sell first-hand real estate and have done fake social security many times. How's it going? You can call me 136, 1768.

Second, I signed a reservation contract and paid a deposit. I would like to ask, is the developer's pre-sale permit complete? If you buy it without pre-sale, the developer will give it back to you, but the developer is fully qualified. Are you satisfied with this house? Will you make trouble for 400 yuan?