The late king knew that congestion would harm the country, so he set officials, doctors and scholars to rectify the law and set penalties, so the world was governed. If it is strong, it is forbidden to brutally punish rebellion, and the world is obedient; When weak, the five tyrants conquered the emperor and the princes obeyed; Cutting land can be kept inside and attached outside, and the country can be preserved. So when the Qin Dynasty was strong, many laws and severe punishments shocked the world. When it is weak, people hate it and the world betrays it. The titles of Duke, Hou, Bo, Zi and Gong in the Zhou Dynasty were in line with the fundamental road, so they were circulated in China for more than 1000 years. The Qin dynasty lost everything, so it can't last long. From this perspective, the difference between stable and dangerous subjects is too far!

As the saying goes, "the past is not forgotten, and the future is a teacher." Therefore, gentlemen govern the country, study ancient history, research the contemporary situation, and test it through personnel, so as to understand the law of ups and downs, know in detail whether the strategy and situation are appropriate, and make choices in an orderly and timely manner, so the country is stable for a long time.