glorious reign; enlightened era
A literary term praising a sovereign's reign or a period of peace and prosperity. Rare in everyday speech; found in historical or poetic contexts.
This temple was built as a symbol of the glorious reign.
The prosperity of the enlightened era is recorded in the history book.
From 昭 (しょう, 'bright, glorious') + 代 (だい, 'era, reign'). The exact historical derivation is uncertain; the spelling is conventionally associated with the meaning of an enlightened age.