Funny riddle story

Author: Wang Dehai / Country: Mainland China
Publisher:
Publishing Date: 2006-06-01
Features: Riddles are popular and widely enjoyed forms of cultural and recreational activities among the Chinese people. The stories in this book are carefully selected and compiled from numerous well-known and widely circulated riddle stories. The content is rich, lively, and entertaining, and it is believed that these riddle stories will leave a deep impression on readers and be well-received by a broad audience. They are highly suitable for government agencies, enterprises, and institutions in China to organize rich cultural and recreational activities. They are also very suitable for the general public to improve their riddle-solving skills, develop their intelligence, and cultivate refined cultural interests and hobbies.
On the third day, Lu Ban had many apprentices. Legend has it that one time, he called his apprentices together and pointed to a pile of zitan wood beside him, saying, "Today, I will test you. Use this zitan wood to create something exquisite within three days." After speaking, he left. Three days later, the apprentices presented their finely carved zitan boards to their master. These works were all unique and highly attractive. However, Lu Ban shook his head at all of them. At that moment, the youngest apprentice walked in, holding a small, exquisitely crafted bookshelf with a character embedded in the center. Upon seeing it, Lu Ban nodded in admiration and said to the other apprentices, "This is what I asked you to create. A craftsman must not only possess exquisite skills but also a sharp mind. All of you should go back and think about why you made mistakes."
After Lu Ban left, everyone immediately gathered around the young apprentice to ask why he had succeeded. The young apprentice told them the truth. So, what character did the young apprentice carve?
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