Going to the toilet is called the source of "convenience"

Going to the toilet is called "convenience", which evolved from relieving oneself.

Because the immigration of the Ming government was mandatory, officers and men tied the immigrants on the road to prevent them from escaping. Binding two arms is called big binding, and binding one arm is called small binding. Not only that, but I am also afraid that they will run away tied up, and the tied people will be tied together with ropes before being escorted to the road. Many people are connected and stop when they want to move. If a person wants to move, it involves a lot, and no one can escape. For the escorted officers and men, it is natural to save trouble, but for the bound immigrants, it is hard.

The most troublesome thing is defecation. In order to express the meaning clearly, it is a long story. For example, if a person wants to defecate or urinate, he must first report and say, "Please stop, please untie my hand, I want to urinate."

The more people there are, the more times the rope is untied on the road. Officers and men also feel trouble, but this method can't be changed. Then only a few words can be simplified: I want to untie my hands. The listener can understand. Until later settled down, this expression also became an idiom and became synonymous with defecation.

The origin of toilets is called convenience.

The word "convenient" has something to do with the imperial examination in Ming Dynasty. Everything is inferior except that the examination room is a sacred place and the words should be civilized and cautious.

However, students are ordinary people, and they all have three anxieties. Therefore, in the examination room of the Ming Dynasty, "going out as a gift, entering as a respect" was set up to facilitate candidates. Candidates must get this card first if they want to go to the toilet, so going to the toilet is commonly known as convenience. The so-called defecation is a big gift, and urinating is a small gift.