[--]

Jyutping gaau1 zi6
Pinyin jiāo sì

Definitions (Wiktionary)
  1. verb, archaic, literary
    to offer sacrifices to heaven and earth outside the city (of an emperor)
    (syn.) 郊祭

郊祀 [--]

Jyutping
Pinyin jiāo sì

Definitions (CC-CEDICT)
  1. pair of annual sacrificial ceremonies held by the emperor in ancient times: one in the southern suburbs of the capital (bringing offerings to Heaven) and another in the northern suburbs (with offerings to Earth)