Who is the author of the sermon among the people?

"The Complete Works of People's Preaching" ***5 articles, written by Si Buzhen.

People are also called ditches, which are located between the nose and mouth and in the middle. The health-preserving family closes the tongue, and the tongue reaches the upper jaw, conveying the body fluid in the mouth downwards, moistening the throat and infiltrating the viscera. This point is just the way for saliva to swallow and turn up, so it is named Shuigou. The nose is full of weather and the mouth is full of air. This point is between the nose and mouth, hence its name. A person's name is more elegant and obvious than the name of a ditch.