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This is not necessarily.
Both inside and outside are open.
Generally speaking, it is inwardly open.
Remember that there are regulations, no, it should be the regulations or rules of building fire protection, I don't remember very clearly, but the fire regulations must have provisions for high-rise doors.
Yes, don't wear it backwards, just wrap it inside, the beauty and safety performance are not ideal, it is recommended to go to the market to customize one, and the anti-theft door is opened inside.
Of course, the living room door of the current house design is basically open outward.
It is not safe to open the door indoors to the outside because you don't know if there is anyone outside, especially if you have children at home.
No, the door flushes the toilet, and if there is space, add a sliding door, a curtain, etc.