源远流长 (源遠流長) yuán yuǎn liú cháng

yuán yuǎn liú cháng set phrase source is distant and the flow is long / goes back to the distant past
Domain: Idiom 成语
Notes: Figuratively, long established (CC-CEDICT '源遠流長'; CCI p. 23; Guoyu '源遠流長')

Word is mentioned most frequently in

Truncated for common words