According to "Zheng Wei Gong Jian Shu", the illness is getting worse day by day, but he still tries his best to give the last exhortation, which is still about personality. He said: "A gentleman should be himself first, and then ask others; Don't blame others before you violate it. I've never heard that you can educate others with a stain on your body. Now what you say in court is all beautiful words for the public, while what you do in court is all evil things for your own self-interest. Sometimes I find out that you are afraid that you will be inconvenient to move, so you deliberately break into a furious rage and want to cover up the past with your arrogance. If you want to be unknown, you must do it yourself; Shattered glass, what good can it do to cover it up for a long time? Imperial status is the highest, and reputation has a lasting influence. A minister of a small country like Zhuge Liang can win the trust of the people with honesty, public interests above everything else and morality. Now, he is neither honest nor upright. What you like, even if it is wrong, you don't feel wrong; What you are bored with, even if it is legitimate, you think it is wrong. Those who live in the upper position are upright and don't make orders, while those who are upright and don't make orders. This must be a top-down effect. Even if you convict someone, they will be dissatisfied. . 。” Wei Zhi died shortly after the protest. Although it is helpless to serve such a master, he has said everything in his life and has nothing to feel guilty about.

Emperor Taizong was worried that his bad behavior would be recorded by historians. He first opened the emperor's eyes to investigate all kinds of evil cases in the current dynasty and intervened in historians' writings, instructing to tamper with historical records and cover up the evil in Zhenguan politics. However, the Emperor's Comments and other works still think that the beautification of Emperor Taizong is far from comprehensive, so they said to Liu: "I don't know much about the book of national history. You will be poor and secluded, and you will be full of glory." As a result, Emperor Taizong got a touch-up in the "poverty and seclusion" of historians, which met the ideal standard of Confucian wise monarch. If the American government is not enough, make up for it with good words. Related historical books written on the basis of A Record naturally have the characteristics of quotations from Emperor Taizong.

After careful modification and beautification by two generations of emperors, the glorious image of "Zhenguan rule" was formally established. After the prosperity of printing and literature and history research, people studied Tang Shi with the basic historical materials polished by the royal family, praised the glorious quotations of Emperor Taizong, and had a good impression on the rule of Zhenguan. Naturally, it is easy to conceive a peaceful and prosperous Tang Taizong era and spread a model to teach future generations.

However, if we read the history books carefully, we can still find that Tang Taizong speaks better than sings, and keeps his virginity worse than writes.

In the later period of Zhenguan, the world became chaotic and Taizong was dying. In "I said a few words of truth to my successor", I talked about some of my mistakes: "I have done a lot of things since I took office: I have never stopped playing with beautiful pearls and jade, which is not a precaution; Every battle needs to carve a horn, a high platform and a deep pool, which is not frugality; Dogs, horses, eagles and storks are bound to travel far away, which is uneconomical; It is not self-defeating to be lucky enough to work hard for others. I'm in too deep. Don't think of this as the last thing. "I only review myself from the perspective of luxury and enjoyment, mainly aiming at the step-by-step extravagance and kindness of the prince, not all kinds of serious misconduct."

However, despite repeated mistakes in the Zhenguan Rebellion, Emperor Taizong partially inherited Tang Gaozu's political style of accepting talents and being outspoken, and made up for his own shortcomings with the loyalty and wisdom of many talents. So he finally gained something, that is, "people", which made Zhenguan politics thrilling and was not overthrown in some mistakes and storms. Perhaps this is also the fundamental reason why intellectuals in past dynasties are willing to praise him. The so-called way of governing the country, first get the "people", so it is not empty talk!