Which idiom describes a person who doesn't know what it means to take a metaphor or an example?

If you have read the Book of Changes, there is a story like this:

Zi Gong cleaned the yard at the gate of the compound in the morning. Someone came to ask Zigong, "Are you a student of Confucius?"

Zi Gong replied, "Yes. What do you think? "

"I heard that Confucius is a famous teacher. You must be a disciple, too?"

"Shame."

"Then I want to ask you a question, I wonder if you can?

Zi Gong readily replied: "Good."

"Actually, my question is very simple. How many seasons are there in a year? "

"Four seasons." Zi Gong answered with a smile.

"No, there are only three seasons in a year!"

"Four Seasons Hotel! ! "

"Three seasons! ! "

"Four Seasons Hotel! ! ! "Zi Gong is justified.

"Three seasons! ! ! "People are not weak.

Then the argument lasted for a long time. Confucius heard the sound and left the hospital. Zi Gong came forward to explain the reason and let Confucius evaluate it.

Confucius did not answer first, but observed for a while and said, "There are only three seasons in a year."

People laughed when they saw this scene.

After people left, Zi Gong asked the teacher, "What season should this year be?" Confucius replied: "Four Seasons"

Zi Gong is puzzled. Confucius went on to say, "This time is different from just now. Just now, that man was dressed in green. He is obviously a grasshopper in the field. Grasshoppers live in spring and die in autumn. They have only experienced spring, summer and autumn in their lives. Where have they seen winter? So in his mind, there is no such concept as' winter'. Fighting with such a person for three days and three nights will get you nowhere. "

Say that finish, zi gong immediately understood.

Maybe the person you meet is the modern version of "Three Seasons"! Ignore it! Avoid doing nothing.