The four ways of teaching fennel reveal that once Kong Yiji participates in reality, he will inevitably show pedantry, and his pedantry is supported by his strong belief in writing. In fact, it is a rule that characters change from complex to simple. Various variants of the word "fennel" are all dead and useless knowledge, but Kong Yiji regards it as "treasure" and shows it off. This pedantic and backward thinking and behavior is bound to be disgusted by people. No wonder the waiter is not enthusiastic and wants to "shut up and walk away". Even the children laughed at his trite language of "too much, not too much" and walked away with a smile.

Such a pedantic and impoverished intellectual has no place in the eyes of adults and children and is not respected at all.