Collective term for three high-ranking government official posts in ancient China: Junior Tutor 少师shàoshī, Junior Assistant 少傅shàofù, and Junior Guardian 少保shàobǎo; they ranked just below the 三公sāngōng.
vulnerable groups
(Mainland China) Collective term for the three categories of vulnerable people: orphans, the elderly without family, and the disabled without family.