Through the information in Alice's data storage, Chen Jin had known about the history of the mysterious ancient country of the East for a while now. Its history as compared to the Z country of Earth could be said to be totally different to the point of being unrecognizable.
Their greatest point of divergence laid in how the historical character "Wang Mang", who seized the throne during the Han Dynasty, was able to successfully establish the Xin dynasty that had lasted for more than 500 years at its peak. The"Wang Mang" here and the events surrounding him up to the establishment of his new dynasty was so similar to that of Z country that he seemed to be an interdimensional traveler from Earth. After "Wang Mang" seized the throne, he successfully implemented a series of reformations and built his dynasty into one that was countless times more powerful and prosperous than the preceding Han Dynasty.