Kong Rong (153—208), a native of Lu (now Qufu, Shandong), was a famous writer in the late Eastern Han Dynasty and one of the seven sons of Jian 'an. His literary creation was highly praised by Wei Wendi Cao Pi. According to historical records, Kong Rong was not only very clever when he was young, but also a typical person who paid attention to brotherhood, mutual help and friendship.

When Kong Rong was four years old, he often ate pears with his brother. Every time, Kong Rong always takes the smallest pear. Once, my father saw it and asked, "Why do you always take the small one instead of the big one?" Kong Rong said, "I am the younger brother, and I am the youngest. I should eat the small one and let the big one be eaten by my brother! "

At an early age, Kong Rong learned the truth of mutual courtesy, mutual help, unity and friendship between brothers and sisters, which surprised the whole family. Since then, Kong Rong has spread the story of pears for thousands of years, becoming a model of unity and friendship.

Standing outside the door on a snowy day, waiting for Cheng Yi (Cheng Yi) to wake up and teach-respect the teacher and emphasize the road.

"My Story" comes from the biography of Shi Yang of the Song Dynasty: "I was forty years old when I met Cheng Yi in Luo. When I saw Yi, I sat with Youzuo. When I touched it, the snow outside the door was one foot deep. "

Cheng Menxue Pear tells the story of Shi Yang and You Zuo, scholars in Song Dynasty, asking Cheng Hao and Cheng Yi for advice. Shi Yang and You Zuo studied under Cheng Hao. After Cheng Hao's death, they were all forty years old and had been admitted to Jinshi. However, they had to go to Cheng Yi to continue their studies. The story happened on the day when they first visited Cheng Yi in Songyang Academy.

According to legend, one day, Shi Yang and You Zuo came to Songyang Academy to visit Cheng Yi, and they happened to meet Mr. Cheng, who was taking a nap with his eyes closed. At this time, it began to snow outside. The two men were anxious for a teacher, so they stood respectfully and waited for a long time. Cheng Yi slowly opened his eyes and saw Shi Yang and Youzuo standing in front of him. He was startled and said, "Ah, ah." Are they still here? At this time, the snow outside has accumulated more than a foot thick, but He Youzuo is not tired or anxious.

This story, called "Cheng Menxue Pear", was widely circulated among scholars in the Song Dynasty. Later, people often used the idiom "Chengmen Sydney" to express that scholars should respect their teachers and study sincerely and firmly.