Get soy sauce
From China Digital Space
打酱油 (dǎ jiàng yóu): getting soy sauce
It means, “no comment” or “none of my business.” It is a humorous way for netizens to distance themselves from a sensitive or political topic.
The word came into popular usage after Guangzhou Television interviewed a local resident about the Edward Chen photo scandal. The man answered, “What the f--- does it have to do with me? I was just out buying some soy sauce.”