Why should I pay the property fee first and then get the key?

There is no requirement to pay the property fee before you can get the key, which has nothing to do with the property itself. Many developers will be the last to get the key on the day of repossession, and they need to pay various fees, including property fees, before getting the key. If the property refuses to hand over the key without paying the property fee, it has violated the owner's rights and can report it to the local housing and construction department.