My Great Achievements Were Abandoned, so I Built My Own Royal Court.

The time traveler Li Zhen assists Emperor Da Yu to stabilize the country and work hard to strengthen the country. However, due to his high achievements, he is jealous and suppressed by the emperor, and his life choice system unexpectedly awakens. He resolutely resigned and went to Danzhou in Mobei, conquered the grassland tribes, married the tribe's heroine Shuoyan Yu'er, established the Dazhen Royal Court, and created elite wolf cavalry and iron pagodas. He defeated Dayu's crusade army, subdued the shaman forces, built the capital out of thin air, fought all the way, captured Dayu's emperor, and competed with the forces of other countries. He was determined to sweep across Kyushu and create his own empire.