Looking at her choking brother, Ming Hui snorted. "Don't worry. He has long known that I'm a man."
Jun Hua knows that, but that brother of yours cannot handle you saying such things when you're still dressed as woman. By her side, Soujin shakes his head as he donned his wine, completely ignoring Yan who's still in coughing fit.
From a long time ago, Jun Hua had noticed that Ming Hui is a man because of his behavior. Since she wants to pass off as a man, she always pays close attention towards how man usually behaves. Although Ming Hui always act as a girl, she is a man so his built is different with a normal woman and that's how Jun Hua noticed it.
At first, she's worried that Ming Hui would notice her real gender, but until now, it seems that Ming Hui still doesn't know about it. Jun Hua feels that Ming Hui might be excellent in acting as a girl, but he still cannot notice that she's a girl, probably due to her martial arts is far higher than him.