Battle Through the Heavens: Who put Laozi in my storage ring?

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He transmigrated into Xiao Yan's body, happily accepting the annulment of his engagement and waiting for the old man in the ring to awaken, but everything seemed to be going differently than he expected...
Xiao Yan: "When are you going to teach me the Mysterious Heavy Ruler?"
The old man said, "What is a Xuanzhong Ruler? I've never heard of it. But I do have a ruler that Yu the Great used to measure the seabed when he was controlling the floods."
Xiao Yan: "Do you know how to refine pills?"
The old man said, "I can barely do a little bit."
Xiao Yan: "I won't argue!"
"You don't seem to be the old medicine master?"
The old man said, “My surname is Li and my given name is Er. People also call me Taishang Laojun.”
Xiao Yan: "If you're Laozi, then I'm the Jade Emperor... Wait a minute!"
Lao Tzu smiled and stroked his beard: "You've remembered this isn't Earth?"
……
Xiao Yan: "Teacher, I'm injured and urgently need medicine. Please give me... a thousand pills."
Lao Tzu: "Eat it as food?"
Xiao Yan: "Then forget it, five hundred is fine too."
Lao Tzu: "Why do you look so much like that monkey?"
……
Years later.
Xiao Yan faced a massive group of powerful members of the Soul Clan.
He wore a Vajra necklace, a golden rope around his waist, and a banana leaf fan on his back. He carried a Seven Star Sword in one hand and a purple-gold gourd in the other, and shouted loudly.
"Three seconds east of the river, three seconds west of the river, don't underestimate a young man... Never mind, Soul Emperor, if I call your name, will you dare to answer?"
……
[A tiny bit more than a billion] [Go tell my master what's going on] [We're all trying to live] [The Ruling Ruler is still a ruler] [Who said I'm a supermodel?]
P.S.: I will be going to the world later.