In addition, please confirm whether the full name of the house in your hand is "Property Ownership Certificate" or "Real Estate Certificate". If it is the former, please bring the relevant documents to the local real estate department (never give the relevant documents to the so-called "after-sales" who can't provide any proof materials). If it is the latter, it means that the real estate license issued to you is already a certificate after the combination of "real estate license and land certificate", which is unnecessary.