Martial Arts: I Am a Heaven-Defying Hero in the Ming Dynasty

In the Ming Dynasty, there was a very powerful protagonist named Li Yueqian. He actually developed the long-lost "Samadhi True Fire" by himself. As for other martial arts, there is no need to go into details. However, he was willing to be lonely and remained unknown in the martial arts world. Suddenly one day, he walked out of the mountains and rivers. What earth-shattering events would happen in the whole world?