สมัยพระเจ้าเหา

Etymology
From 🇰🇲; literally "time of Divine Lord Hao".

Prá-jâao Hǎo ("Divine Lord Hao") is believed to:
 * 1) refer to Xiao Hao, a Yunnanese ruler who reigned between 1511–1328 BC, according to Likhit Huntrakun (ลิขิต ฮุนตระกูล) and  (จำนงค์ ทองประเสริฐ); or
 * 2) refer to Prá-jâao Hǎo, the name of an ancient hall in  where Lord  launched a coup against King  in 1688, according to  (ดำรงราชานุภาพ); or
 * 3) be an idiomatic reference to an unspecific ancient figure, with the word Hǎo probably being from the Chinese surname, according to Suchit Wongthet (สุจิตต์ วงษ์เทศ).

Noun

 * 1)  long time ago; time immemorial.