

Summary of the I Became Invincible After Sweeping The Floor For 70 Years
I was just some servant scrubbing the floor until... poof! I got stuck in this weird new world, reincarnated as Qin Chen, apparently cleaning duties on the Taiyi Sacred Ground. Talk about an identity crisis!
The real twist? A login system decided to grace me with rewards every time I signed into a new place. Crazy stuff.
So, one day, I swept by an ancient ruin and bam! Gained control over that chaotic energy body – no idea how it worked, but hey, free power. Later, at another location called the Empire Ruin? Yep, found myself the Chaos Emperor Scripture. Then there was this Alchemy Palace thing... got top-tier alchemy skills for signing in. And don't forget the Immortality Elixir from the Herb Garden!
I figured I'd just keep sweeping and using my system-gifted stuff until I couldn't be bothered anymore. Easy life, right?
But then the Great Kingdom crumbled inside the Sacred Grounds! Suddenly, everyone – other lands, big families, ancient powers – is after me to deal with that rising All-Powerful Demon King. He's wrecking havoc, threatening our whole place.
Me? I'm just a servant who accidentally got powerful through an app and random sign-ins... forced into hero mode now?
Seriously, why do *I* get the short end of this power stick when things suddenly escalate like this?
**Series Title: "I Became Invincible After Sweeping The Floor For 70 Years"**