At that time, chickens, ducks, geese and dogs were running around in some people's yards, and feces were everywhere. When they enter the yard, they will stink and be laughed at by clean people, because the yard is made like a pigsty. If your family holds a wedding and cleans up the yard, you can put some stoves in the yard, cook, set the table and put the banquet on the street. Cooking in this yard will be laughed at by clean people as cooking in a pigsty.