Once upon a time, there was a young craftsman who thought highly of his own skills. He had heard that Lu Ban was the master of carpenters with peerless and unsurpassed exquisite craftsmanship. However, this young craftsman was a bit unconvinced in his heart. He thought, "Although I haven't seen Lu Ban, my skills are not bad either. Maybe I can even surpass him."
One day, the young craftsman came to a bustling market where people were coming and going. He saw a lot of people gathered in one place. It turned out that Lu Ban's disciples were showing some exquisite wooden products. The young craftsman thought that this was a great opportunity and he wanted to show everyone how good he was. So, he pushed his way to the front of the crowd and said loudly, "All of yours are nothing. Watch me show you the real craftsmanship." Then, he began to fiddle with his tools and gesticulate on a piece of wood, and the people around all looked at him curiously.
Seeing this young craftsman being so arrogant, Lu Ban's disciples all showed puzzled expressions. They thought, "Who is this person? How dare he show off so much in Lu Ban's territory?" One of the disciples kindly said to the young craftsman, "Do you know whose place this is? Master Lu Ban's skills are at the peak. It's not appropriate for you to do this." But the young craftsman didn't take it seriously. He said, "I don't care about Lu Ban or not. I only believe in my own skills."
Just as the young craftsman continued to fiddle, the crowd suddenly became quiet. It turned out that Master Lu Ban had come over after hearing the commotion. Lu Ban stood there quietly, looking at the young craftsman. When the young craftsman looked up and saw Lu Ban, he suddenly felt a little frightened, but he still pretended to be calm.
Lu Ban watched the young craftsman's operation for a while, then gently pointed out several mistakes in his techniques and demonstrated the correct way on the spot. Looking at Lu Ban's skillful and superb techniques, the young craftsman immediately realized his mistake. His face turned bright red and he lowered his head in shame, realizing that it was really stupid to show off in front of an expert. From then on, this young craftsman no longer dared to show off his skills easily, but learned from others with an open mind.