First of all, if you have a down payment agreement with the developer, you will be legally responsible for the consequences of not giving it. Developers can also not give you a house or refund your down payment 1%. If you are unreasonable in law, you will be very passive.

If the house price drops after buying a house, if it is because of the trend of the big market, then the result should be borne by you. Because buying a house is actually an investment and risky. The key is your judgment. If when you buy it, the developer does not explicitly guarantee that the house will not be reduced in price for a long time, and if the difference is made up by the developer, then there is nothing you can do. It's like buying gold. You bought it in 230 yuan. Three days later, the price of gold fell to 190. You can't go to a businessman. If the price drops ridiculously, like Shenzhen's, it drops by 6,000 to 7,000 yuan in half a month, then there is still a glimmer of hope for litigation.