How many methods are there for water and electricity installation?

You look like a miscellaneous army. If we repair the house like this, we can't deliver the goods.

First of all, let's talk about whether we can dress obliquely, askew and bend.

Concealed conduits are allowed. In order to save costs, the same is done. Water pipes are generally not allowed, but home improvement is still acceptable.

Then, the ground pipes or water pipes should be strictly buried in concrete. But you can put it on the ground, but you have to make sure that there is a protective layer 3 cm thick after completion, or at least 1.5 cm thick. But judging from your site, even if the floor tiles are attached, the thickness of the protective layer can't be guaranteed. If you have to install it like this, you must first pick a groove on the ground and put the catheter and water pipe into the groove.

Especially where water pipes cross, special bridge elbows should be used instead of being stacked like this. There is a great risk of tube explosion in the future.

The wall pipes are working well.