Li Chengzhen, a general of the border army, was reborn and returned to the dying years of the Tang Dynasty. When he opened his eyes, he became a "remnant of the previous dynasty" who was imprisoned in the cold palace by the empress. The empress is strong, the vassal towns are divided, and foreign enemies are around. He pretends to be a loyal dog, but secretly uses his past life memories and modern engineering technology to create firearms and formations that are far ahead of the times. Escaped from the cold palace, went to the frontier to conquer the cavalry, returned to the court to battle wits and love with the empress, and finally overthrew the decadent empire and sat on the dragon throne. This is not a usurpation, but a salvation. When the empress knelt in front of him and handed over the imperial seal, he smiled: "My beloved concubine, please call me Your Majesty."
