The phenomenon that the intermediary companies buy in at low prices and sell at high prices and secretly take the difference has become one of the major "unspoken rules" discovered during the inspections. Some intermediaries have even openly bought second-hand houses. An insider revealed that it has almost become an "unspoken rule" for real estate agents to arbitrarily inflate listed prices, with increases ranging from 5% to 10% or even higher of the housing price. Through the secret operations of the intermediaries, this difference will eventually end up in the pockets of the intermediaries.