Oh No, Ancestor! Our Clan Has Become the Top Power in the Immortal Realm

The Tianxuan Continent is divided into five regions: east, west, south, north, and central. The eastern, central, and southern regions are occupied by humans, the west by demons, and the north by fiends. The male lead lives in the mountains at the northernmost edge of the Eastern Pole Continent, near the fiend territory. In the heart of those mountains lies an isolated land where the state of Chu was founded. This is a high-martial world with no cultivators. The male lead transmigrated and cultivated until he became a Martial Saint, but then cultivators broke into his country, and he died as a result!