How did you know all this?

Ji Xiehan was mortified. "You knew about it all along? How did you even know?" 

"That was easy to find out. The one from my class is a good artist, but she has always looked like she is in a hurry to go somewhere. 

Then when no one is looking, she discreetly meets up with a particular guy. Three days ago, she had a bud in her ear. It was of the same color as her skin and was covered by her hair, but I saw it briefly and cannot mistake it. The other mole is quite obvious, right?" Li Lanni casually rattled on, as though what was saying was something that happened every other day. 

Ji Xiehan stared at her in disbelief. "You're kidding, right?" 

"Nope. Believe it if you want to. But I don't think it would be funny to joke around with such a matter. " 

Ji Xiehan didn't know whether to ask how on earth she knew all this or how she could be so calm saying it. "And you didn't tell anyone?" 

"Nobody asked me. It was none of my business." She shrugged.