1. If the woman pays off the loan before marriage, it has nothing to do with the man after marriage.
2. If the woman continues to repay the loan after marriage. Then half of the repayment within marriage goes to the man.
In case of divorce, the woman should compensate the man for half of the repayment. In addition, the value-added part of the marital house belongs to the common property of husband and wife and should be divided.