Which poem does Dust on the Millennium Paper come from?

History is a mirror. If the mirror is not smooth, the person who shines out will be out of shape. Reading history is Wang Anshi's work in his later years. With his rich life experience, he knows that the history written by his predecessors is quite different from the historical facts. He lamented that "fame and fortune have been bitter since ancient times. Who will pay in the end?" What is scattered is the Analects of Confucius: "Use it and do it, and discard it and hide it." Here refers to the political activities of successful people all their lives. Since ancient times, fame and fortune have always been hard work, but who will you entrust your career to in the end? "The darkness at that time was still a mistake, and the customs of the last days were more chaotic." Historians write history, covering up the darkness at that time and allowing mistakes to be inherited. There are different opinions, from wrong to wrong, from false to true. "dross is not the essence of beauty, but the spirit that Dan Qing is difficult to write." Some dross handed down from history is not the true essence of history. Like a painter's brush, it is easy to imitate the shape, but it is difficult to draw the spiritual essence. "The area is full of noble intentions. It is just dust on paper." Finally, he admits that although I can't realize the ideals of ancient sages, I will stick to their ideas (in fact, his reform ideas), although the history written on paper is dusty! This shows that although Wang Anshi failed in political reform, he will be written into the history of being relegated, but in his heart, he is still strong. It was really when I was dreaming, and when I woke up, I was thinking. Reading history, when we are young, we will never doubt that there will be mistakes in black and white, and someone will follow suit. But with some experience, you can really have your own judgment. Didn't Confucius say "forty without confusion"? So is it true that people under forty can't tell right from wrong? You can't blame everything today. There are fakes everywhere and they always tell lies. It turns out that there is a historical heritage. A lie told a hundred times is truth, not an invention today. China is a big country that has created many firsts, and lying and faking are also firsts! After reading Wang Anshi's History of Reading, I really need to think about it. The winner is king, the loser is a thief, and the official history comes from the royal literati, which is bound to praise the current dynasty and deny the previous generation. Historians are either confused or confused, or cover up evil for gentlemen, or choose to tamper with it under your orders, which can only sing praises for those in power. When the history was revised every other generation, it was another rectification movement. There are many versions of one thing, and unofficial history joked that there was no agreement. What we can see today, even the contemporary party history has changed, and the paper is gray. How can we understand the 5,000-year history of China? So how should we read history? How to understand true and false? I think of Lu Xun's Dream of Red Mansions: "It's just the meaning of life that looks at the reader's eyes: Confucian scholars look at the Book of Changes, Taoists look at lewdness, talented people look at lingering, revolutionaries look at fullness, and gossips look at palace secrets." If it is not intentional, the ass decides the head, and maybe the position decides the opinion.