Does it have an impact on making a toilet behind the shrine in the hall?

It is advisable not to build toilets.

The shrine is a symbol that we use to worship the gods and ancestors, and its position is very particular, but it must not be placed randomly. Worship the gods, unless you have a large place of your own, you can vacate part of it to make a Buddhist hall to worship the gods, otherwise, the most common at home or in the shop office building to worship the gods, there is generally a shrine, and some people call the shrine a shrine. >>>More

Not only that, from a health point of view, after taking a bath in the bathroom, the water vapor evaporates, which will cause the humidity in the room to increase, which will cause various diseases, and the gains outweigh the losses.

Some things are too much, and some things, no one knows if you take advantage of yourself, and you rely on yourself to know if there is a problem with the placement.

Test results include impaired glucose tolerance but not diabetes. Further urine specific gravity is recommended to rule out diabetes insipidus. If all are normal and organic diseases are excluded, consider oral Chinese medicine decoction for kidney deficiency (you also need to know yin deficiency or yang deficiency before prescribing). >>>More

If you feel uneasy, you can find someone in Feng Shui to show you.