Li Ke, a graduate student in the history department of Capital Normal University, touched the bronze compass in the museum and traveled back in time to the deposed prince Li Ke who was taken to the execution ground during the Zhenguan period. He was the son of the former Sui princess. His father Li Jing was killed in the battle. His own cultivation was completely ruined. He was also framed by the eldest grandson Wuji for treason and treason. He was about to be executed at three quarters of noon!
At a critical moment, the compass suddenly displayed: "The secret letter ink is the pine smoke ink of the West City, the sealing mud is imitation, Changsun's staff entered the Dali Temple at night!"
Li Ke used the compass to make a comeback from a desperate situation and slapped Changsun Wuji in the face in public. Li Shimin, who came incognito, was stunned. I wanted to save my life safely, but unexpectedly the compass showed another mystery: "The Weishui River hides the treasures of the Sui Dynasty, and the Turks move just for the treasure hunt!"
From then on, the deposed prince transformed into the rebellious son of Zhenguan: the sand table deduction predicted the situation of the Liaodong war, shocking Wei Zheng's chin; he improved water transportation and invented movable type printing, making Li Shimin call him "God gave me a son"; he played with the prince Li Chengqian on the polo field, attracting Cheng Yaojin and other veterans to join him; he went deep into the secret channel of the Weishui River to crack the former Sui's mechanism, and overcame the Turkic cavalry to seize the key to the secret vault...
In the court, he relied on modern knowledge and compass clues to liquidate Changsun Wuji's gang members one by one; on the border, he used improved weapons to beat the Turkic Khan to his knees and beg for peace; in the secret realm, he uncovered the origin of the compass and the former Sui Dynasty, and discovered that his time travel was not an accident, and even Li Shimin hid the secret about the compass!
When the battle for the reserve became fierce, and when the Turkic sacred objects caused turbulence in time and space, Li Ke stood at the cusp of the storm holding a compass: "I will guard this prosperous age of Zhenguan; I will determine the order of time and space!"