MTL - Pirates: Famous Teacher Kaido, Online Teaching - v2 Chapter 474 Punk 6

The Immortal Path led to Longevity and Sovereign was heading in ease. When the Longevity was no longer in ease, all living beings were just prisoners. Conspiracy, internal strife, and the invasion of the others, all of it emerged together. 

In such a world, there was such a young man. He made his way upstream, stepping on blood, defying the emperor, destroying the various kings, and slaughtering his way through the hundred clans to form an Immortal Path towards the throne of Sovereign! The Immortal Path was endless, while the Sovereign was limited. He used his blood to forge his immortal legend.

- Description from Novelupdates

Jun Xiaoyao was transported to a mystical world and became the divine child of a Clan of the Ancients. He came to possess an invincible background, unparalleled talents and even a check-in system, enabling him to acquire an Accomplished Sacred Body of the Ancients at the very beginning of his new life.

He acquired the Divine Elephant Overpowering Force, a six-star reward, checking in at the Old Tablet of Taiyue.

He acquired the Bones of Supremacy, a seven-star reward, checking in at his Ten Years Old Banquet.

He acquired the Cauldron of Maternal Qi of All Beings, an eight-star reward, checking in at the Bronze Mystical Hall.

He acquired the Grand Method of Freedom Melding, a ten-star reward, checking in at the Borderless Ocean.

He sat on the clouds countless years later, with his sword pointing at the heavens, saying, “I alone shall rule over the heavens and the earth. I shall become the pinnacle at the very end of the mystic path!”

- Description from MTL

Emperor Zi Yu used 5 strikes of his axe to split mountains and unify everyone underneath the heavens. He partitioned the land into 9 areas, thus establishing the Nine Cauldrons which eventually became known as the 9 prefectures.