1. As long as it does not exceed the value of the mortgaged property (b), you can apply for mortgage loans in more than two banks. In case of demolition during the mortgage loan period, the compensation for demolition shall be given priority for repaying the loan in advance or continuing to be used for loan guarantee. 2. If my uncle can't continue to repay the loan during the loan period, the bank can sue and demand the auction of the property, which has nothing to do with whether my uncle is a low-income household. 3. If the auction proceeds can't pay off the loan principal and interest, you can't continue to execute your mother's other property, because your mother is not a guarantor, and only Room B is mortgaged property. Even if you save money in the name of a third person, it is still my uncle's property (the agreement signed by your mother with my uncle and the third person is enough to prove this). Uncle owes a loan, give the money to your mother and give it to others. For your uncle, no one has the priority to be compensated, so you can't pay back the money you owe your mother first. Suggestion: You don't need to exist in the name of a third person, you can return it directly to your mother.