Invincible Since I Severed My Own Supreme Realm

[Travel and exploration, myriad worlds, more traditional fantasy, no female lead, not a saint] Chu Yang transmigrates into a vast and magnificent universe. He proves his Dao and becomes an Emperor. What's more, he becomes the first-ever Great Emperor with a Sacred Body! But Heaven and Earth are merciless. Even the strongest Great Emperor cannot live beyond twenty thousand years, and as a Great Emperor with a Sacred Body, he has only ten thousand years! With no other choice, he can only cripple himself and become a Supreme, waiting for the road to immortality to open. One day, Heaven and Earth tremble, the myriad worlds shake, and countless heroes vie for supremacy. The road to immortality opens! Chu Yang makes his move and obtains a wisp of mysterious energy from within. From then on, he reclaims his place as Emperor and sweeps through the myriad worlds! (The synopsis doesn't do it justice. Please read the novel.) (The first two chapters set up the opening of the road to immortality. The protagonist doesn't make his move until Chapter Three.)