蔡伦书评

After that, Cai Lun often thought about what to use to make books. One autumn night, he was thinking again in his bedroom. Suddenly, some dry leaves blew in through the window. Cai Lun picked up a leaf and looked at it carefully. What else could possibly be used to make paper? Then, a great idea came to mind.（Be willing to think） "Well done! How could you come up with such great ideas?" "I just tried thinking in a different way," Cai Lun said.（Be good at thinking）