Herodotus's History is a historical record of the war between the Greek nation and the Persian nation, and an introduction is its essence:

This book is the research done by Herodotus. He published this book in order to remind people of what their predecessors did, to prevent the great deeds of Greeks and Gentiles from losing their due glory, and also to record their territorial status in these grievances.

The above content is very helpful to readers. It tells you briefly what the whole book is talking about. But if you read all nine parts of the book, you will find more wonderful places. Such as the kings of Persia-Ju Lushi, Darius and Xue Xisi; Greek heroes-Leonidas (the protagonist of the first part of Sparta 300 Warriors) and Themistocles (the protagonist of the second part of Sparta 300 Warriors); And many thrilling events-crossing the Heller Strait, the Battle of Dempires, the Battle of Salamis, the Battle of Hot Springs Pass, and the Battle of Marathon.