"Knowing is knowing, not knowing is not knowing, just knowing." This quotation is about Confucius' attitude towards learning, and of course there are other things. Confucius believed that everything should be treated with humility, sincerity and honesty. Knowing is knowing, and not knowing is not knowing. Don't pretend to know and deceive yourself.

Yes, if a person hides what he doesn't understand, pretends to understand in front of others without asking others, then he is "ignorant" and hypocritical. It is not terrible that people don't understand. The terrible thing is that they don't pretend to understand. In this world, no one is born with astronomy, geography and the past. People constantly enrich themselves in constant learning and exploration. Only by learning from others with an open mind and not being ashamed to ask questions can we make continuous progress. Seeking truth from facts has always been the consistent style advocated by our party. Ancient China is facing severe challenges. Only when we face the reality can we catch up and lead in history. Otherwise, if we are like Mr. Nan Guo, we will only be laughed at by future generations and eventually eliminated by society.

Come on! Let's study hard together, study honestly, do things in a down-to-earth way, and prepare for the challenges in the future!