While the player is in Battle Through the Heavens, the system is in The Great Ruler.

Good news: Lu Yu has transmigrated and arrived in the familiar Dou Qi Continent.
Bad news: The cheat emulator has a bug; the simulation location is in the Great Thousand World, not the Dou Qi Continent.
"Dragon and Phoenix Divine Fruit? Great Floating Pagoda Technique? Spirit Array Master's Inheritance? This isn't just a bug, it's an absolute godlike start!"
Lu Yu said, "This bad news is actually great news!"
then--
Relying on what he gained from the simulator, he embarked on an unprecedented path of cultivation!
Gu Xun'er: "Spirit Array Master? Isn't that a cultivation method from ancient times?"
Zi Yan: "What is the Dragon and Phoenix Divine Fruit? Is it delicious?"
Little Fairy Doctor: "The Great Floating Pagoda Technique, the Yin Technique? My Calamity Poison Body is being controlled like this?"
"Everything I have today is due to my own hard work!"
—This is what Mr. Lu Yu, the master of all fires, a grandmaster of saint-grade alchemy, and a grandmaster of saint-grade spirit arrays, said.
……
P.S.: This is a harem anime; please do not read if you dislike this genre.

Novel keywords: "The Person in Doupo is in the Great Ruler, but the System is in the Great Ruler" (no pop-ups), "The Person in Doupo is in the Great Ruler" full text download, "The Person in Doupo is in the Great Ruler" latest chapter reading.