Archaeologist Li Yan unearthed a mysterious bronze gun in the Yin Ruins, accidentally activated a quantum wormhole, and traveled to the eve of the Jingkang Incident in the Northern Song Dynasty.
He possessed the body of Zhang Yu, a Hebei rebel who froze to death. With the memory of modern technology and the ancestral tiger talisman and jade pendant, he met the young Yue Fei in the Xiangzhou military camp. When it was discovered that the Iron Pagoda of the Jin Army was actually equipped with alien technology, and the multinational group "Howard" used the Xixia wormhole to tamper with history, Li Yan realized that this Jingkang incident was actually the outpost of an interstellar war that spanned a thousand years...
