That left Ye Chen in a bit of a bind. He couldn't think of a better solution, so he figured he might as well try using sound waves. That would probably be easier for the other party to understand.
Ye Chen then said to Vine Tree Immortal, "Senior, I'm speaking to you through sound waves. Please listen carefully!"
"Actually, I already know a bit about Li Hentian's situation, and I understand why you've been helping keep his affairs secret. After all, his life is at stake!"
"So I want to tell you not to worry, Senior. We're not bad people. I know a little about Li Hentian, too. You might not believe me when I say that we know each other."
"A few days ago, by pure chance, I met Senior Li Hentian and learned about some of what happened to him before he went to the Heavenly Court. We got along very well!"
"I'm sure you know that Li Hentian has already taken human form. To be honest, I was the one who gave him the pill that let him transform!"
"When we parted last time, Senior Li Hentian told me he wanted to give the remaining Form Transformation Pills to his family, so they could grow stronger over time."
"We really did come looking for Senior Li Hentian this time because we have something of our own to take care of, and we hope he can help us."
As Vine Tree Immortal listened to Ye Chen, he stroked his beard and nodded thoughtfully, as if pondering something.
Ye Chen continued, "I wonder what you think of what I've told you, Senior. Whether or not you believe me, I want you to know that everything I've said is true. Not a word of it is false."
"If you really