Why can't I pay the property fee?

In the process of buying and selling commercial housing, the buyer has the right to demand the developer to deliver the house according to law after paying the house price as agreed in the contract. The sale of commercial housing and the payment of property fees are two different legal relationships. The illegality of this clause lies in that the property fee is tied to the delivery of the house, and the house will not be delivered without paying the property fee, which violates the provisions of Article 10 of the Measures for the Supervision and Handling of Contract Violations and is an act that aggravates the responsibility of consumers.