Solution:
(1) At the entrance of the gate, a pair of elephants or bronze toad elephants are placed with their heads facing outward to absorb the leaked air.
Note: the golden toad needs to put his head outward. If there are copper coins in Jin Chan's mouth, please take them off.
(2) You can put a string of five emperors' ancient money or six emperors' ancient money under the threshold or at the door.
(3) If the traffic in the house is already very bad, you can put a golden toad cornucopia at the gate.