From "Yanzi Chunqiu Neipian Miscellaneous Part 2": "Ying heard it: Oranges are oranges when they grow in Huainan, and they are oranges when they grow in north Huaibei. The leaves are similar, but the taste is different. So what is the reason? Water and soil It’s different. People today don’t steal when they grow up in Qi, but they steal when they enter Chu. Is there no water and soil in Chu to make people good at stealing?”

Yanzi left his seat and replied. : "I heard that the orange trees in Huainan grew into orange trees. They grew in Huaibei and became trifoliate trees. They are just similar in leaves, but their fruits taste different. What is the reason for this? Because of Huainan and Huaibei There are different soils and water. Now people can steal when they enter the state of Qi. Doesn't it mean that the soil and water of the state of Chu make people good at stealing? :

1. In the sixth lesson (experiment) of the Shanghai textbook for the nine-year compulsory education in Shanghai, "Oranges over the Huaihe River become Zhizi" (excerpted from "Yanzi Chunqiu") as the 29th lesson (121-124 Page). Edition) in Shanghai Education Press, and is also the 29th lesson of the second volume of the sixth grade of the Soviet Education Press.

2. "Yan Zi Chun Qiu" has many vivid plots that express Yan Ying's story. Intelligence. For example, "Yan Zi controls Chu" is widely circulated among the people. Through specific examples, the book also shows that the two concepts of "harmony" and "identity" are "the same". "" should be criticized. The real "harmony" is to dare to make suggestions to the monarch and supplement the monarch's shortcomings, which is worth advocating. This dialectical discourse has become a highlight in the history of Chinese philosophy.

Baidu Encyclopedia----Southern Orange and Northern Orange