When he woke up from the dream, his soul traveled through the Tang Dynasty and became a county magistrate on the verge of despair! Faced with cracked farmland, flooded victims, and mountains of government affairs, modern "parent officials" relied on forward thinking and practical skills to solve urgent needs by opening warehouses and releasing grain, and used scientific water control to break the thousand-year drought. From building water conservancy projects to reforming farming and mulberry farming, from reorganizing officialdom to establishing academies, he used his wisdom and courage to reverse the predicament and transform the dilapidated county into a prosperous place. Let's take a look at how a time-traveling county magistrate set off a wave of change in the prosperous Tang Dynasty and wrote a passionate legend that benefited one side!