When Tang Bohu was not famous, he used to rent in a family. The proprietress forced him to move out because he had no money to pay the rent. He had no choice but to take out several pairs of butterflies and give them to her to pay the rent. Although the proprietress didn't want to, she had no choice but to take it and sell it. I didn't expect them to sell it at a good price.

So she hid out of the window at night to secretly see how it was painted. I saw Tang Duan carrying a basin of ink, taking off his pants, dipping it in the basin, and then sitting on a piece of white paper, a butterfly came out.

The next day, the proprietress solemnly told Tang, "I don't want your butterfly anymore, you have to give me money!" " "

In the evening, the proprietress drew many paintings like him, but she couldn't sell them, so she found a wise man to show them. The wise man looked at them for a while and said, "Your butterfly is missing a tail."