The official name of the toilet is toilet, which is a covered bucket for defecation. The invention of the toilet is called a great invention, which solved the problem of people eating and drinking Lazar. Later, it evolved into a toilet using siphon, spiral siphon, and now the latest jet siphon and super spiral siphon. There are many kinds of toilets, including split toilets and conjoined toilets.
According to the collocation method of toilet cover, it can also be divided into ordinary toilet and smart toilet. Smart toilets can be divided into automatic changing sets of smart toilets and non-automatic changing sets of smart toilets. The former includes automatic sleeve changing and water washing, and automatic sleeve changing with water washing and drying.
The history of toilets can be traced back to the Han Dynasty. At that time, the toilet was called nothing, which was dedicated to the emperor. Legend has it that it is made of jade. It was held by eunuchs who served the emperor specially for the convenience of the emperor at any time. Later, in the Tang Dynasty, because there was a man named Li Hu in the royal family, he changed his name to Beast or Maiden in order to avoid taboo. Later, in the circulation, it evolved into the name of the toilet.