Xia Siyu had two modes when drunk.
When she was utterly intoxicated, she would talk nonsense and uncontrollably send a barrage of texts and call someone persistently to bother them. If you paid attention to her, that was fine. But if you ignored her, she'd just keep sending messages nonstop until the other person broke down.
However, when she had just started drinking, from being slightly tipsy to drunken, she'd become very quiet. She was not someone who easily got drunk, and even if she drank a lot her face wouldn't turn very red. From her appearance, you couldn't even tell she was drunk. She would just sit there quietly, listening to your jokes, occasionally letting out a silly laugh but never for too long.
To the unaware, she seemed like she was just listening quietly to the conversation, displaying a very sophisticated and mild temperament. But only those who were very close and familiar with her knew that she was actually pretty high.
