Gǔ / shū / zhōng / bǎ / zhǐ / chī / yí / dào / cài / bù / pèi / fàn / jiǔ / de / chī / fǎ / chēng / zuò / kōng / kǒu

古书中把只吃一道菜、不配饭酒的吃法称为空口。

Ancient books called eating a single dish without rice or wine “空口.”