The abandoned little devil

Si Yehan: [Bad dream?]

Other than that, he couldn't figure out why Ye Wanwan would have such a strange thought.

Ye Wanwan hugged her phone and rolled around on the bed: [Nah, I saw an adorable little boy today but the main point is that the little boy had a similar temperament to you - cold, indifferent, insufferably arrogant and it was as if the phrase 'stupid humans' was written all over his face, like speaking to other people would decrease his IQ. The two of you are remarkably alike - he's a little devil, so I almost thought you had an illegitimate child…]

Si Yehan: [Cold, indifferent, insufferably arrogant, devil?]

Ah! I'm dead meat! I accidentally revealed my true thoughts of Si Yehan…

While describing how similar that little boy was to Si Yehan, she said he was cold and indifferent - it was equivalent to saying Si Yehan was like that!