What is a tauren couple?

A tauren couple means that a husband and a wife wear green hats and green headscarves for each other. The abbreviation of tauren is NTR, which is the Roman pinyin abbreviation of "Netoru" in Japanese, and the Chinese translation is "the spouse or object is taken away by others". It describes that one of the husband and wife has sex with others, which is also called wearing a green hat and a green headscarf. This is an insulting title. In general ACGN works, it is also used to describe the situation that objects are taken away.