First, after receiving the deposit, you can give the real estate license to the intermediary, and the intermediary will issue a receipt for the real estate license. The purpose is to show the buyer that the seller will not sell one room and two halls, so that the buyer can rest assured.

Second, there is another point because the intermediary needs the information on the real estate license (a word can't be wrong) to do the online signing, which is of course the clearest original.

Third, of course, you can not put the real estate license in the intermediary. When the intermediary makes the online signing, the seller issues the real estate license and takes it away after the online signing is completed.