In the past, the Sword Emperor failed to escape the tribulation, and his soul traveled through the modern city. He originally wanted to live in a low-key retirement, but was assigned to work as a Chinese teacher in a useless college. All the students were in ruins, and the school bully was rampant. Until one time in an ancient literature class, he casually recited a lost sword formula, which actually caused strange phenomena in the world. The whole school is shocked, mysterious organizations come to visit, and former enemies show up one after another. But he just pushed up his glasses: finish memorizing this text first and then talk about it.
