What are the main essences and dross of China's ancient educational thought?

Ancient China was dominated by stereotyped writing in Qing Dynasty. Pay attention to a' virtue'. It has a very important influence in the hearts of ancient people. Serve people with virtue, employ people with virtue, and employ people with virtue. . . Of course, there are also shortcomings around. Education is too rigid, too innovative, too conservative and too enterprising. In the imperial examination, many outstanding talents were not fully utilized, which was the loss of the country and the main reason for the demise of China in that year. In a word: "we should learn from the perseverance of the ancients in reading poetry books, and make up for it." . . "