1.
Biography: Biography is the center of biography, emperors are described by biographies, princes, princes and special figures are described by aristocratic families, folk figures are described by biographies, chronologies are recorded by tables, and laws and regulations are recorded by books or records.
2.
Chronological style: Chronological history books take the year, month and day as the order, the year and month as the classics and the facts as the latitude.
3.
Country style: Country style history books are historical essays recorded by some countries, which are divided into many parts.