Taking the Chinese Gods to Fantasy, I Try My Best to Increase My Lifespan

Invincible, don't feel aggrieved! Salted fish Xu Xinzhou traveled to a fantasy world, but he didn't expect that he wouldn't be able to practice! Fortunately, the sky has not fallen yet, and you can summon the Chinese gods by taking the elixir! However, because the elixir is stored for a long time, it requires a large amount of preservatives, and eating it once can damage your body. So Xu Xinzhou started a side job in a small sect. As long as you can help me increase my physique, I will help you kill the Demon Emperor. What? Not from the demon world? I am the righteous one, and if I say he is from the demon world, he is from the demon world!