When people are young, their minds are focused and sharp. When they grow up, their thoughts are easily scattered. Therefore, children must be educated early and good opportunities must not be missed. When I was seven years old, I recited "Lingguang Palace Fu". To this day, I review it every ten years and have not forgotten it. After the age of twenty, if the scriptures memorized are left there for a month, they will become desolate. certainly. There are always times when people are in trouble. They lose the opportunity to study in their prime. They should seize the time to study in their later years and not give up on themselves. Confucius said: "If you study "Yi" at the age of fifty, you will not make big mistakes." Emperor Wu of Wei and Yuan Yi studied more intently when they were old. These are examples of those who studied diligently from childhood to old age. Zengzi began to study when he was seventeen years old, and finally became famous all over the world; Xunzi began to study in Qi State when he was fifty years old, and still became a great scholar; Gongsun Hong did not start reading "Spring and Autumn" until he was in his forties, and later became the prime minister; Zhu Yun He also began to study the "Book of Changes" and "The Analects of Confucius" when he was forty years old, and Huangfu Mi began to study "The Classic of Xiao" and "The Analects of Confucius" when he was twenty years old. They both became great scholars in the end. These are all examples of addiction early in life and disenchantment late in life. Most people say it's too late before they start learning when they reach adulthood. If they continue to mess around like this day by day, it's like standing facing a wall and not seeing anything, which is stupid enough. Those who learn from an early age are like the rays of the rising sun; those who start learning in old age are like walking at night with a torch, but they are better than those who cannot see anything with their eyes closed.
"Wen" should mean "listening". I don't understand the second question.
This paragraph tells us that a person should "resolve in early education"; if he "loses his prime", "especially if he goes to school late, he should not give up." Mainly discusses the issue of the best learning age group.