I Grinded 10,000 Levels of Qi Refining and Ascended Back to Earth

One fall. Twenty thousand years. Li Yuandao tumbles into a cultivation world and refuses to give up—grinding his way to an absurd Qi Refining level 10,000 through sheer stubbornness. When heavenly tribulation finally strikes, it doesn't grant him immortality. It boots him straight back to modern Earth. Now he's the world's most overpowered "humble cultivator," and anyone who underestimates him is in for a rude awakening.