1. Airflow collision between the front door and the bedroom door.
The bedroom is a very private place.
Judging from the first question, there are two kinds of qi mentioned in geomantic omen, one is terrestrial qi, and the other is flying stars for good or ill luck. The way of air intake is mainly from doors and windows, and the air from doors comes in from the outside, so the air from the bedroom comes in from the hall, which should be the place where air is gathered. If the air from the door reaches the hall, but it can't gather, the consequences are as follows.
Second, we should consider the privacy of the bedroom. If the bedroom door faces south, it is not good for women aged 15 to 30, especially those with evil peach blossoms. To resolve this evil, put a screen between the door and the bedroom door.
The master bedroom has high privacy. If the window is too low, it will become a privacy leak, causing tension between husband and wife. Curtains can be used to cover one of the windows.
From the health point of view: ventilation at home can easily lead to diseases such as colds or strokes.