1 was invaded by five elements of poisonous gas (that is, ghosts as the folks say). The landlord can go and see if there have been any vicious accidents in this area. Or use a compass to detect.
2, airflow wear, the image of money leakage.
Solution:
1, in the first case, it is enough to remove the five elements of poison.
2. In the second case, put a screen after entering the door. Or place partitions in long and narrow places.
No compass, no pictures, that's all I can see.