Being a covert agent, Gu Beicheng made the ultimate sacrifice and braved through a lightning strike to safeguard the imperious jade seal. Astonishingly, he was transported through time and found himself in the early years of the Tang Dynasty. Despite the hardships and deceit that lurked in this rickety era, he fulfilled the far-fetched dream of every individual from modern society: obliterated Tubo, subdued the Turkic Khaganate, vanquished Goryeo, quelled the warlords, and united China with Emperor Taizong of the Tang Dynasty. What upheavals will the return of the All-powerful Agent bring about in the martial world of the Tang Dynasty? Let's trail behind him as he unravels the extraordinary scrolls, relish in the splendor of the Tang Dynasty, and broaden his territorial dominance!