Liver Proficiency from Immortality

Once he traveled through time, Lu Yuan gained immortality. But in this world where demons are rampant and immortals and gods reign supreme, immortality is the greatest curse. In order not to be regarded as Tang Monk meat, and in order to find some fun in these endless years, he decided to maximize all his skills! Ten thousand years later, when a great catastrophe befell heaven and earth, and the immortals and gods fell, he swung his sword and discovered that he was already invincible.