How are the water pipes in the toilet divided? What are the tubes in the picture?

Friend, your question is too wide-ranging, mainly based on experience. For example, the same chair, China, Japan, Europe will have different sizes, mainly based on ergonomics to design the size, it is recommended that you buy a book on related aspects to understand, if you have any questions, you can also ask me directly, I have been engaged in furniture drawing and development work for ten years.

The general hotel kitchen is basically divided into: washing room, side dish room, cooked food room, dim sum room, etc., different places have different names but the same size, as for the linen room belongs to the housekeeping department, quilts, sheets, towels and other cotton products are commonly known as linen.

Looking at the orientation, the bed is generally oriented north-south.

1. Urination, in the past, was urinated into the "bucket (pot, jar, etc.)", and then poured outside. Later, after urbanization, someone on the fifth watch (before dawn) specially pushed a cart to help collect it, transport it outside the city, and dump it into the wasteland. (Not fertilization, the ancients could not accept "natural fertilizers".) ） >>>More

The hot and cold water pipes are installed in the floor tiles and wall tiles, and the large pit pipes are generally in the corners and sealed with tiles.