During the Spring and Autumn Period, there was a man named Sun Yang in the State of Qin, who was good at distinguishing the quality of horses. He wrote a book about his experience in understanding horses, which is called Xiangma Jing. This book introduces all kinds of good horses with pictures and texts, so people call Sun Yang "Bole". Sun Yang's son, after reading this book, thought that he had learned his father's skills, so he took the Xiangma Jing to find a good horse. One day, he saw a toad on the road, and his forehead was consistent with the characteristics of a good horse in Xiang Ma Jing. Thinking that he had found a swift horse, he immediately ran to tell his father, "It's similar to the good horse in your book, but its hoof is different." Sun Yang laughed and cried after listening, so he had to answer: "This Matthew loves to jump, which is not easy to control." Ji: Good horse. This idiom means to follow the knowledge in books mechanically without seeking the essence of things.

It's Sun Yang

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