Hello! According to different local policies, second-hand housing transactions require buyers and sellers to be present and sign in the process of handling land certificates in order to complete the transaction. Now there are several ways to solve this problem ... first, you and your wife attend in person. Second, the buyer confirms whether your separate signature is valid at the Land and Resources Bureau. If possible, you only need one person to be present. Three: Some Land and Resources Bureaus only require the buyer to bring a copy of the bottom file of this property right transaction to handle the land certificate transfer by himself. four