打醬油

1. • to buy soy sauce
2. • it's none of my business ("I’m just here to buy some soy sauce")

Character by character

• 打(dǎ)a semantically light, transitive verb that is combined with various grammatical objects to form compound verbs and verb-object phrases with a diverse range of meanings
• 醬(jiàng)thick paste of fermented soybean
• 油(yóu)oil