C396 I think it's too simple

"Who is this?" Hearing this, Ye Ran unhurriedly raised his head and looked at the man who had been rude from the moment he stepped into the room. He adjusted his glasses as he asked in a flat tone, his thin lips pressed into a straight line.

It was as if he was completely uninterested in the identity of the person in front of him. He merely asked the question out of politeness