I Became Invincible After Sweeping The Floor For 70 Years Novel

Qin Chen found himself transmigrated to the Taiyi Holy Land, assigned as a humble floor-sweeping servant. On his sixteenth birthday, a system activated, granting him rewards for signing in at new locations. These sign-ins yielded immense power: the strongest Chaotic Holy Body and the Chaos Emperor Scripture at the Empire Ruin, Probationary Royal Armies at the Demon Sealing Land, Divine-grade Alchemy at the Alchemy Palace, an Immortality Elixir at the Herb Garden, and the Emperor-grade Divine Art, Revival, at the Empire Palace, among others. Qin Chen envisioned a peaceful existence, accumulating strength through continued sign-ins. This quiet life was shattered when the ruins of a Great Kingdom appeared within the holy land, coinciding with the emergence of a destructive All-Powerful Demon King. This Demon King, responsible for numerous deaths and a direct threat to Taiyi Holy Land, drew powerful figures from other holy lands, families, and empires. Faced with this crisis, Qin Chen was compelled to intervene. With a single slap, he vanquished the Demon King, lamenting the necessity of revealing his strength, a feat he attributed to being forced from his role as a mere servant.