Distinct from regular full-time universities (
普通高校 pǔ-tōng gāo-xiào).
业余 (yè-yú) literally means 'outside one's main occupation', so a
业余大学 runs evening and weekend classes for in-service workers. Most have been folded into the
开放大学 (Kāi-fàng Dà-xué, Open University) system since the 2010s.