As we all know, in the process of second-hand housing transaction, it takes seven working days at the earliest from the signing of the sales contract to the completion of the housing transaction transfer, and the housing transaction cannot realize the handover method of "paying money with one hand and obtaining the certificate with one hand". At the same time, during this period, if the account funds are not supervised, there will be great hidden dangers in the security of funds. It can be seen that due to the "time difference" between buyers and sellers, according to previous trading experience, it is particularly important for all parties to choose professional house payment supervision products in order to ensure the security of house payment funds during the transaction. The buyer, Mr. Xu, purchased the house located in Li 'an Road, Chaoyang District through XX Company, and signed the sales contract on May 20 12, with a total house price of 3.3 million yuan. The seller, Mr. Wang, informed that the house has been mortgaged with the mortgage amount of RMB 6,543,800+0.8 million. After negotiation with Mr. Xu, he paid a down payment of RMB 6,543,800+and a down payment of RMB 6,543,800+and RMB * * * 6,543,800+to assist the seller in the mortgage cancellation procedures, which was not regulated. After the loan was approved, at the transfer stage, the seller Mr. Wang put it off until 20 12. Later, after verification, the seller, Mr. Wang, did not take the down payment to settle the mortgage, and the debt increased from 3 million yuan to 3.45 million yuan, so the transaction could not continue. The buyer, Mr. Xu, has neither bought a house nor recovered the down payment of 1.8 million yuan, so he can only solve it through litigation. After many hardships, the final judgment of 20 14 was finally issued, and the court entered the stage of enforcement. Two and a half years later, the buyer, Mr. Xu, finally recovered his money. ...