Mirrorless Taoism

[The stolen iron box is empty, but the pursuit around the world is real] Life has entered a countdown. Zhang Wuyu risked his life to steal a black iron box, hoping that the energy core inside would prolong his life. What he got in exchange was that his vitality was halved, he was sent to the fortress with a reward, enlightened men hunted him down, and the Privy Council surrounded him. Relics from the last era, desperate situation, sourceless energy core... All clues point to the legendary door to another world.