Jiang Yu wakes up to find the world has changed drastically. "The Emperor Qin's spirit pet, the ancestor dragon, was accidentally critically injured and after its death, transformed into the Great Wall to eternally guard the northern border." "Yang Guang dug the Grand Canal, angering the mountain and river dragon king, and his spirit pet fought it, resulting in both of their deaths." ...Closing the thick "Xia Kingdom History" book, Jiang Yu looks at the fire-breathing deer beside his mother and feels a surge of anger.