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You can make a septic tank and install a deodorized "bowl" at the toilet (I can't remember the scientific name, everyone who sells toilets knows it). That way there won't be a smell.
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You can make a toilet at the back of the shop.
This does affect Feng Shui, if you are a shop, it will cause your turnover to be low and not many customers. It can also have an impact on physical health. If you still have any questions, you can send me a private message.
There are no regulations, it completely depends on the individual, but the bathroom is damp, and the wall is easy to get damp if it is not plastered with bricks.
Adopt the method of five elements of customs clearance and yin and yang. >>>More
If the problem is not big, it is best to hang the curtain and add items such as five emperor coins.
How is there a grave behind the bathroom, the ancient name thinks, the bathroom represents the house, and the reason why there is a bathroom in the house from the grave.