YouTuber Hwang Hyeon-pil's representative lecture on Korean history, "Imjin War," has been released as a book, boasting 100 million views.

The seven-year war from 1592 to 1598 brought great suffering to the country of Joseon and its people.
In that suffering, Yi Sun-sin sacrificed himself for his country and people.
There were many people around him who were jealous of him and hindered his future.
Among them was the king of Joseon.
What kind of person was Yi Sun-sin that he put aside the trials he faced and tried to save his country and its people, and how did he save Joseon?
And what kind of death did he face in the Battle of Noryang?

"The Sea of ​​Yi Sun-sin" introduces Yi Sun-sin's life as a military officer of a country and his activities in war in chronological order, from his childhood until his death on the battlefield after the outbreak of the Imjin War.
In addition, the book vividly explains to readers how Yi Sun-sin and the Joseon army that followed him were able to win against the Japanese army by expressing the war situation of 23 battles and 23 victories in a moving three-dimensional map.
In addition to the 3D map, there is a general map detailing the movement routes of units, and a 'Battle Results Table' compiled at the end of each battle, so that the commander, fleet, and troops of the battle can be viewed at a glance.

It not only tells the story of the Imjin War and Yi Sun-sin, but also the stories of those around him, such as Ryu Seong-ryong, Won Gyun, King Seonjo of Joseon, and various Japanese commanders, in an exciting way.
In the final chapter, the author introduces theories of suicide and seclusion regarding Yi Sun-sin, who died in the Battle of Noryang, and their rebuttals, and discusses how we should view Yi Sun-sin, who will be remembered as a hero even in later generations.
Let's cheer on Yi Sun-sin and our ancestors who endured and overcame the Imjin War by turning each page of "Yi Sun-sin's Sea," which we must all know.
It's time to read, laugh and cry together.