This book travels through the tunnel of time and uncovers the mystery of the Southern Song Dynasty. The light songs and dances by the West Lake pool, the ingenious and exquisite treasures, the three stacks of Song lyrics and songs, the heroes and talents who shine like stars... What's more exciting is the things in the book: in the face of external military threats, how should the Southern Song Dynasty people realize the nightmare of restoring their country? Why did the emperors of the Southern Song Dynasty who were determined to do things end up being mediocre and become the "e;Supreme Emperor"e; who didn't care about the world? Why was the highly prosperous material culture of the Southern Song Dynasty unable to resist the iron hoof of Mongolia and quietly broken. The book shows not only the luxury of the Southern Song Dynasty, but also her struggle, blood and backbone.