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The once glorious Tuoba Xianbei people could not escape the fate of leaving sadly in a feudal society where political power changed like a revolving door. Even the Xianbei nation disappeared in the smoke of history. However, the civilization and glory created by the Tuoba Xianbei people were forever engraved on stones and passed down for a long time...

Three to four thousand years ago, a kind of creature called human seemed to suddenly possess intelligence. This is an unsolved mystery of the world. Many people said that this was an evolutionary trend, and some said that it was an experiment by aliens. History teacher Qiu Xiu is a world-renowned expert on ancient history. On his subject, he took four students to Okinawa to study a topic, but accidentally fell into a time trap and went to an unknown world. Was this premeditation or God's will? What will they experience?