Said by: Guan Ning, Huaxin Garden hoes vegetables, and there is a piece of gold in the field. There is no difference between a hoe and a tile stone. China caught it and threw it away. I have also tasted the taste of reading at the same table. Those who pass by the entrance of the porch would rather study as before and read those useless books. Ning cut the mat and sat down separately, saying, "I'm not my friend." -"Shi Shuo Xin Yu De"
Meaning: During the Three Kingdoms period, Guan Ning and Hua Xin shared a seat when they were studying. Later, Guan Ning looked down on Hua Xin's character and took the seat apart. Later generations refer to breaking up with friends.