I Am Already Invincible, so I Still Need to Strengthen My Weaknesses?

Li Xu attained enlightenment in the wilderness and became an emperor. He was invincible and powerful enough to make the world's taboos and even other realms dare not invade the human world. But for such an invincible man, he got a rare treasure that was meant to strengthen his shortcomings. [You don't have enough lifespan and are about to enter your old age. I'll give you an elixir of immortality that can reshape your life for the rest of your life.] Li Xu was stunned, and then he refined the elixir of immortality and lived a second life. [If you have time on the Heavenly Fire Avenue, you can comprehend the Hongmeng Xianyang and hope to transform into the Avenue] Li Xu then got a piece of Hongmeng Xianyang Stone, from which he felt the charm of the ancient prehistoric sun. After thousands of years of understanding, the Heavenly Fire Dao transformed into the Xianyang True Fire Dao, and he successfully entered the third life. [You have been fighting all year round, and your imperial body has been damaged, but your fighting spirit is strong. You can go into the long river of time to fight with the emperors and build a fighting god's body] Li Xu can really enter the river of time at any time through the exotic treasure, and attack the emperors of the past, present and future. After countless battles, he can truly build the body of the God of War, break through to the fourth life, and achieve the level of a heavenly emperor! ………… Faced with Li Xu, who has been reborn for a lifetime. Forbidden creatures in the world: What's going on with this thing? Life after life, hanging on to death? All Realms Outside the Territory: Is this going to bring about a human emperor who will sweep across all realms? The Prodigy of the Desolate Realm: When the Great Emperor is in this world, he suppresses all ways and cuts off our path to enlightenment... However. After Li Xu broke into the fourth life, he used the power of the Heavenly Emperor to fuse the shackles of the Supreme Heavenly Heart in the Wild World, unlocking all the ways of heaven and earth, so that a new emperor could be born in the Wild World. But the birth of the new emperor can only be reduced to Li Xu's foil. Li Xu continued to strengthen his shortcomings until he became an immortal in the world and respected by all the worlds. But the mythical catastrophe that followed soon made him face new challenges...