Dual time anchor: The modern memories carried by time travellers will trigger "historical entropy", and every change in history will accelerate the emergence of steampunk elements (such as gear astrolabe, air pressure repeating crossbow) in the ancient world.
Bloodline Compass: The unique "double pupils" of the Qianliang royal family can see the flow of energy, but using it will permanently consume the memory of the corresponding era.
Organized natural disaster: The "Xuanji City" in the tomb of Emperor Wu of Liang is actually an ancient climate weapon, and its activation is quantumly entangled with the Taibai Star cycle
Cultural Annihilation: The "Heluo Language" mastered by the Five Kings and Seven Surnames can rewrite reality at the cost of burning the blood life of the chanter. Star-track torture tools: The Taishi Bureau intercepts future radio waves to create torture tools, which can make sinners experience the moment of death repeatedly.
Mirror Dynasty: There is a parallel time and space entrance in the Xuanwu Gate Underground Palace, reflecting another Beiyan where the protagonist has not traveled through the timeline.
