"Just because you haven't heard of it doesn't mean it doesn't exist. I can't tell you where I got it from, so you might as well give up!"
Lu Yanxi looked at him with an expression that said 'You're really clueless': "This is a scar-healing ointment I've managed to obtain after much difficulty. It's a secret formula handed down by the ancestors and not for sale to the public. Now, the fact that you can actually buy it is quite something. You should be thanking me for offering you the chance to completely heal your scars! You ought to be more polite to me!"
"You talk it up so well, then why don't you just sell the ointment to me! I won't short-change you on the money!"
"Is this about the money?"