河清海晏

the Yellow River is clear and the sea is calm / the world is at peace (idiom)

river / CL:條|条[tiao2],道[dao4]

Qing (Wade-Giles: Ch'ing) dynasty of imperial China (1644-1911) / surname Qing

clear / distinct / quiet / just and honest / pure / to settle or clear up / to clean up or purge

(of water etc) clear; clean / quiet; still / pure; uncorrupted / clear; distinct / to clear; to settle (accounts)

surname Hai

ocean / sea / CL:個|个[ge4],片[pian4] / great number of people or things / (dialect) numerous

Haiyan County in Haibei Tibetan Autonomous Prefecture 海北藏族自治州[Hai3 bei3 Zang4 zu2 Zi4 zhi4 zhou1], Qinghai

surname Yan

late / quiet