Reborn as a Sword God?

A modern product manager dies suddenly and travels back in time to become a fortune teller at the end of the Yuan Dynasty. The soul of the ancient sword god is sealed in his body. With a mobile phone with 1% battery and a brain of modern knowledge, he farms, makes money, builds cities, fights monsters in troubled times, and at the same time rescues the arrogant female head catcher who cut off his queen.