Yao Shen screenshots the conversation immediately, and sends it to Xin Hulei.
To Gao Wu he replies:
[Little Menace: sounds very interesting, didi. I'm sorry I couldn't be more help.]
Time passes without him getting an answer. For a moment he's worried Xin Hulei blocked him, but he can clearly see his message was delivered so maybe he's just ignoring him.
Each second that goes by without Xin Hulei getting back to him just makes Yao Shen feel more nervous.
What if Gao Wu is suspicious about Xin Hulei too?
Yao Shen remembers the System telling him about other 'Exorcists', early on, but Yao Shen put the whole thing completely out of his mind.
He assumed it was just something Si Wang told him to convince him the whole 'capture the demon king' thing was legit.
Now he's not so sure, and worse still, he has no idea of what it means.