"Help me practice, and I'll help you find your obsession!"
The man smiled coldly, "It's just you! A mere human! How ridiculous!"
Li Shangwu suppressed his anger, "Yes, as a human being who has lived in this era for twenty years, I am much better than you, an old antique who lived in an unknown era!"
The man is silent and thoughtful
"What do you want"
"I want you to stay with me for fifty years!" Li Shangwu looked directly into the man's cold eyes. "During this period, we will get along as equals, but you must keep me safe and help me in any situation that is conducive to my cultivation!"
"How can I trust you?"
"I would like to swear from my heart that if I don't let you go after fifty years, my cultivation will never improve again in this life!!"
The man frowned, "Okay! I will do as you wish!"