When the drought was severe, the king held the rain sacrifice and prayed for relief.
Tips
history
雩 is not used independently in modern Chinese. It survives in classical ritual terms like 雩祭 (the rain ceremony) and 舞雩 (the rain-dance altar mentioned in the Analects). The phonetic is 亏 in its old 于 form.
register
Archaic and ritual vocabulary, found in classical texts and etymology notes, not in everyday speech.