What does ant tribe mean?

"Ant tribe" is not an insect group, but a little-known huge group of "post-80s generation"-"low-income group of college graduates", which refers to college students who live in the urban-rural fringe after graduation because they can't find a job or their work income is very low. "Ant tribe" is a typical generalization of "low-income group of college graduates". Like ants, they are a huge group that is little known.