diǎncài shí wèn zhè dào cài gòu jǐ gè rén chī bǐ zhǐ kàn jiàgé gèng shíyòng

点菜时问“这道菜够几个人吃”，比只看价格更实用。

Asking how many people a dish serves when ordering is more practical than just looking at the price.