You applied for a loan from the bank to buy a house, and you signed a mortgage loan. The logical relationship is that you don't have enough money to buy a house, so you apply for a loan from the bank to pay the house price, and the house is used as collateral. At this time, if you check out, it means that you don't have a house and the loan collateral doesn't exist, so the loan contract can't be fulfilled because of your check out, so once you check out, you will face liquidated damages for two contracts.

3. The purchase contract is the legal basis for binding buyers and sellers. Once the contract is signed, it means that both parties are legally bound, and both parties can't go back on their word at will, otherwise they need to pay the liquidated damages stipulated in the contract.

The signing of the loan contract is the legal binding between you and the bank. Once signed, you can't go back on your word at will, otherwise you need to pay the liquidated damages stipulated in the contract.