Chen Guanqi, Master of the Heavenly Mandate Hexagrams

To save his younger sister, the protagonist Chen Guanqi uses the Hexagram of Fire and Thunder, Biting Through to hack into the underworld’s Book of Life and Death System. But he triggers Heaven’s “causality firewall,” causing a temporal rift to open in Emperor Taizong’s tomb. Li Shimin’s NPC consciousness transmigrates to a modern stock-trading forum, sparking the “historical ghosts trade A-shares” incident.