She is playing with him. How is he meant to know what the old fashioned style of drinking is, in her world? He keeps his irritation off his face, and opens a random cabinet, hoping that the magic of the mansion will provide. A glass rests there, full of an amber liquid that smells like bitter citrus; perhaps that's what she wants.

Luo Binghe sets it on the counter, and bids the mansion create another one for him. He is determined to extend a hand to her in friendship, and he knows what a powerful broker of treaties alcohol is, even if he doesn't favor it. He will drink what she drinks, to show his trust. "It seems the mansion is familiar with the fashions of your world, unfamiliar though they are to me."