Before reading this book, please have the following beliefs: 1. It is believed that the citizens of any country, especially those who claim to have knowledge above the level, should know a little about the past history of their country. 2. The so-called people who know a little about the past history of their own country must be accompanied by a kind of warmth and respect for the past history of their own country. 3. The so-called people who have a kind of warmth and respect for the past history of their own country, at least they will not have a kind of extreme nihilism about their own history, and at least they will not feel that we are standing at the highest point of the past history, and regard us as All kinds of sins and weaknesses in the body, all blamed on the ancients.

4. Believe that each country must wait for the proportion of its citizens to meet the above-mentioned conditions to increase, and the country will have the hope of further development.