Fantasy of the Ming Dynasty

In the thirteenth year of Emperor Shenzong's reign, the emperor was troubled. A mysterious man suddenly appeared beside the emperor and said, "The empire's legacy is still waiting for your majesty's call." The emperor opened the remaining world map with hesitation... Afterwards... Oh my god, it smells so good! —— "Did something go wrong with my time travel... Why is the Ming Dynasty here different from the one in history???" The protagonist looked at the world after time travel with a confused look on his face. "Is it possible that my time travel caused changes in the timeline? Has everything become chaotic?" The protagonist originally wanted to change the world by relying on the mathematics, physics and chemistry he had given back to the teacher, and become a giant in science and a pioneer of the times... But facing an already chaotic world, the protagonist reluctantly changed his profession and became a mage. This book is a fantasy flow, so don't bother with historical details, there are no details in this book.