Offering Spiritual Qi Revival to the Great Qin

Synopsis: Ye Xuan was a corporate drone in the early twenty-first century. Then he transmigrated into a cultivation world, where he instantly ascended and became a mighty expert. Now, in 247 BC, he's a wanderer with no ID from any of the Six Kingdoms. In 247 BC, King Zheng of Qin ascended the throne. For more than seven hundred years after the Zhou dynasty, the land was in turmoil... The First Emperor, drawing on the achievements of six generations, wielded his mighty power to rule the world, swallowed up the two Zhou states and destroyed the feudal lords, ascended the throne and brought all under heaven to heel, and used punishments and laws to rule the realm... He then sent Meng Tian north to build the Great Wall and guard the frontier, driving the Xiongnu back more than seven hundred li. The northern tribes dared not come south to graze their horses, and the people dared not bend their bows in revenge... He unified the Six Kingdoms, standardizing the written language and the width of carriage tracks... Ye Xuan: Wasn't ascending to immortality supposed to give me the ability to tear through space and return to Earth? This is Earth, sure, but it's 247 BC... Well, things didn't go quite as planned, but it's no big deal. Ye Xuan (reaching into his pocket like a cartoon cat): Your Majesty, would you care to learn about the elixir of immortality, a world map, cultivation, future technology, and spiritual qi revival? Content warning: An irresponsible fantasy about a parallel world. Two male leads. Ye Xuan has no romantic pairing, while Ying Zheng's partner is his empire. Core message: Give civilization time.