The loan for buying a house has been paid off, and no city bank can find the property information. As of April 26th, 2023, the banking system in China has been connected with the whole country. Even if the user is not in the same province, you can find the historical information of the user and the property information of the previous loan to buy a house. Therefore, the loan for buying a house has been paid off, and the property information can't be found in a city bank.