The Beginning Almost Destroyed the World

Li Cheng traveled to the world of Xianxia and was trapped alive in the Heavenly Palace, the most precious treasure in all realms, for 100 million years. Unlucky? It doesn't exist. In these 100 million years, with the help of the sign-in system, Li Cheng not only refined the All Heavens Palace and the countless inheritances in it, but also became the supreme being. But after coming out of seclusion, Li Cheng was confused, "I cultivated immortality and became a Hongmeng-level boss. Are you telling me that we are already in the fantasy era?" Li Cheng has a headache. He is incompatible with the rules of heaven and earth. The slightest movement will cause the destruction of the world. What should he do? Also known as "Cultivation for 100 million years, but the cultivation is lonely", "Starting with self-destruction and invincible cultivation", "The boss is the boss"