Chinese Basic 1
Ordering Food and Drink

Using

(hái) is an adverb meaning 'still, also'.

Examples:
你们要点儿什么? Nǐmen hái yào diǎnr shénme? Would you like something else?
要一盘点心。 Hái yào yī pán diǎnxīn. (I) would also like a plate of snacks.