What should I do if I pay the down payment for the house I bought and want to check out?

It is ok to pay the down payment and want to check out, but both parties need to voluntarily bear the liability for breach of contract and pay the liquidated damages according to the contract signed by both parties through consultation. The details are as follows: First-hand housing needs the consensus of buyers and developers, and then apply to the housing management department to cancel the online signing with ID cards, online signing contracts and other materials, and then check out; After the second-hand house needs to be negotiated and agreed by the buyer and the seller, they should go to the housing management department with ID cards, online contracts and other materials, and then check out.