The Ming Emperor and I Are Brothers

When the protagonist wakes up, he finds that he has traveled to the end of the Yuan Dynasty, the temple is dilapidated, and there are bursts of killing sounds outside the temple. The protagonist yelled at the system all the way but didn't get any response. I had already accepted my fate but was rescued by a monk. Brother, I think you are extremely brave and will become a great weapon in the future. If you can trust me, brother, how about we become sworn sworn brothers and expand the territory together to achieve all these achievements?