An immortal source material, meticulously capturing historical truth, this must-read masterpiece for all Koreans! The author, who witnessed crucial moments in turbulent history firsthand, has spent 45 years researching and preaching with a love for his country. This four-volume series, based on thorough fieldwork and vivid testimony from witnesses, offers a comprehensive guide to understanding modern and contemporary history.
Let's encounter this immortal masterpiece that awakens the legitimacy of the Republic of Korea through the living patriotism of a veteran who fought in the Korean War.

From the end of the Joseon Dynasty to the present day, the Republic of Korea, the land of the morning calm, has endured the greatest turbulence in its long history of half a millennium.
Our country's turbulent history up to this day has been a thorny path of hardship that is difficult to fully express in words.
Amidst the competition between world powers, the exploitation and oppression of the Japanese Empire, the chaos of the left-right confrontation after liberation, the devastation of the Korean War, and repeated political turmoil, the Republic of Korea was plunged into pitch-black darkness and chaos, unable to see even an inch ahead.
However, the Republic of Korea, a weak nation that was so unfortunate, was a people of good and kind hearts who loved peace more than any other country.
Our people, who are extremely innocent and naive, have finally built a prosperous nation through the single-minded belief that only when the country prospers can the people prosper, and through the diligence and frugality that has made them buckle down.
The Republic of Korea, holding onto a single ray of hope beamed down from the heavens, miraculously navigated the turbulent waters of history, ultimately elevating its national spirit and rising to become the envy of the world.
The Republic of Korea now faces a crucial historical turning point, a time when it must accomplish a great national undertaking, become a world-leading, first-class nation, and embark on a new era of advancement.
If there's one thing most urgent for the people of the Republic of Korea at a time like this, it's the accurate recognition and transmission of history...
The history of the Republic of Korea is also the history of each of us.
Without knowing the history of one's country, no one can establish a correct identity, and no one can expect a bright future for themselves or their country.
There is no individual without a country, and there is no country without a history.
An accurate and correct understanding of history is the true expression of patriotism, and it is the shortcut to making the Republic of Korea a leading and powerful nation in the world.
I wrote this book with a sense of mission to convey to the younger generation the history they deserve to know as citizens of the Republic of Korea.

--- From the preface