DINK (English: Dink) is a lifestyle term, which originated in Europe and America in 1960s and was introduced to Asia in 1980s. This is transliterated from English dink, and also translated into a double-income childless or dink family. It turns out that Dink is the abbreviation of "double income without children", which means "double income without children" family.
Detailed explanation
The most reasonable definition is that couples or individuals who have two occupations and can have children but choose not to have children subjectively think they are dinks, so they are called dinks. The first criterion for becoming a Dink is: having fertility and choosing not to have children. Besides taking the initiative not to have children, it may also be subjective or objective reasons and passively choosing not to have children.
Secondly, subjectively accept and recognize their own Dink identity. It is a very important factor to think that dink is a way of life. In real life, it is these groups who recognize their role as a Dink, and can better adhere to their own choices, manage and enjoy their own Dink life.