Is Gu Wu Weak? My Sword Opens the Gate of Heaven, and the Nine Heavens Overcome the Calamity

The blue star's spiritual energy revived, the devil's cave descended, the human race's thermal weapons failed, and countless terrifying monsters descended to slaughter humans. Fortunately, the will of heaven has manifested, and humans over the age of 16 can awaken their profession. Li Mu chose the weakest ancient warrior and obtained the skill simulator. Are ancient warriors really weak? Practice swordsmanship, simulate hundreds of training routes, choose the best training direction, and understand the Dugu Nine Swords! Practice palm skills, simulate hundreds of practice routes, choose the best direction, and understand the Eighteen Dragon Subduing Palms! Cultivate internal strength, simulate hundreds of cultivation routes, choose the best direction, and understand the Nine Yang Magic! … Li Mu relied on the skill simulator to grow into the strongest person in Blue Star! When the demon king from outside the territory comes with countless powerful monsters, Su Mu is the only one in the Shenzhou Dynasty to fight against it. Just when the Demon King thought that it was inevitable to capture the Shenzhou Dynasty. Su Mu smiled strangely and no longer suppressed his cultivation. Nine days of calamity clouds shrouded the sky, and the calamity came. Su Mu opened his arms, guided the endless calamity thunder, and rushed towards the devil. Demon King: Don't come here...