First of all, from the perspective of Feng Shui, the hall is an important place for a family, representing the image and dignity of the family. From the perspective of feng shui, it is easy to cause a "last stream" situation, which is not conducive to the family's wealth and career development. In addition, the toilet is a filthy place, and there is a toilet behind the hall, which is also easy to bring dirty air and affect the health and gas field of family members.
Secondly, from the perspective of building structure, if the back of the hall is a load-bearing wall or a key structural support point, then setting up a bathroom may affect the building structure and increase security risks.
Finally, from the point of view of convenience, if there is a bathroom behind the hall, we need to consider drainage, ventilation, noise and other issues. If it is not handled properly, it may affect the use effect and quality of life.
To sum up, in general, it is not recommended to set up a bathroom behind the hall. If it must be set up, it needs to be planned and designed reasonably according to the actual situation to ensure safety, hygiene and convenient use. It is recommended to consult and communicate with professionals or local construction departments before this.