Traveling Through Time and Becoming a County Magistrate, I Can Do Whatever I Want

(Alternative history + farming infrastructure + multiple female protagonists + invincibility + non-immortal cultivation + system) Chen Anqing traveled to the Da'an Dynasty and discovered that the person he traveled through was actually the magistrate of a small border county. Emperor Da'an sought power and usurped the throne, which caused turmoil in the court and made the people miserable. Neighboring countries are also watching with eager eyes. The barbarians from the north are moving south every year. In this era of war and chaos, let's see how the protagonist, with the help of the system, rises from a small county magistrate to dominate ancient times step by step.