Successful experience is of course important, it can lead future generations to success; The lessons of failure are equally important, even more important to some extent, which can help future generations to avoid detours or go astray on the road of exploration. Failure is also an education. People who know how to think, whether they succeed or fail, can learn a lot from it.
"History is always repeating itself", which is often regarded as the standard by us. In fact, history has become a fait accompli, and it is meaningless to simply dwell on it. The practical significance of reading history lies in gaining useful experiences and lessons for the present and the future.
Emperor Taizong, who initiated the "Zhenguan rule" and laid an important foundation for the prosperous new century, took history as a mirror, the people as a mirror, and the death of Sui as a warning, made great efforts to govern, select talented people, broaden their horizons, cherish coachable, respect life, exercise self-restraint, cherish coachable, reduce the tax burden, practice strict economy, rest and improve the imperial examination, and made great efforts to pacify foreign invasion.
"History will always be strikingly similar, but it will not be simply repeated", which is the natural law of the development of things and also a philosophical dialectics. This similarity is similar in form, but not exactly the same. It is not advisable to ignore this similarity and regularity, and the mechanical copying of metaphysics is also unscientific. In our future work and life, we should learn from the successful experience of others, draw lessons from others' failures and warn ourselves not to make the same mistakes in our work. At the same time, we should keep pace with the times in combination with reality, not follow the script, and constantly move from victory to new victory.