Among them, there are three kinds of statements. The first one was handed down from five generations. According to historical records, there was a man named Wang Jian at that time. Because the ancients generally introduced themselves to others, they would use their surnames and ranking at home to express their modesty, but they could not address others in the same way. This is a rude behavior. Wang Jian ranks eighth in the family, so he is also known as the tortoise. Because of his petty theft, people despise him very much, and people will call him a turtle to humiliate him. After a long time, the tortoise gradually became a dirty word.
Second, because the pattern on the belly of the turtle looks like a king, and the pattern on the head and tail has eight characters respectively, the turtle is called a tortoise. At the beginning, the ancients thought that the male turtle was infertile and the eggs laid by the female turtle were combined with snakes, so this bastard was saying that his father was unknown and had the meaning of wild species. This statement is very rude.
The last one is the saying among ancient literati. Because the ancients attached importance to a person's eight kinds of conduct, the bastard said that people forgot eight things, which is the biggest insult to ancient literati, because it will affect their official career and reputation among literati.