Immortality and Invincibility Start from Signing in When You Are Weak

[Don't be depressed, don't lick the dog, cool article] Jiang Jianfeng traveled to the fantasy world of high martial arts, and got a sign-in upgrade system at the beginning, and received a seven-star reward, super understanding! As long as you advance to a higher level, you can get a chance to sign in. Improve the realm of body refining and sign in! Improve your god-refining realm and sign in! Improve the level of medicine refining and weapon refining, and sign in! A few years later, Jiang Jianfeng, who was standing at the top, suddenly found that he had no opponent!