As an aficionado of romance movies, Zhou Wen would have no trouble naming an artist by recognizing some part of their body.
But to expect him, a textbook example of a Theoretical Emperor, to figure out what a girl is thinking, that's harder than making Laden and Obama become sworn brothers.
So, he opted for playing dead, closing his eyes and pretending to be unconscious.
Yu Xuan looked at Zhou Wen's act and sighed. Then, swiveling a few rounds of his eyeballs, he suggested, "Little Miss, don't cry. I know you're worried Chen Fan won't come back. You can rest assured. Chen Fan is a reliable person. He's always been one to keep his word, if he said he would meet us here, he definitely will."
Obviously, Yu Xuan, assuming Tian Cao to be Chen Fan's girlfriend, believed that Tian Cao was crying because she hadn't seen Chen Fan yet. He said this to comfort her.