Meaning of 滄海 in Japanese

Definition of 滄海

そうかい(soukai) 【蒼海 ·滄海】

そうかいいってき(soukaiitteki) 【滄海一滴】

そうかいそうでん(soukaisouden) 【滄海桑田】

(exp) The word is a scene of constant changes (as the blue sea changing into a mulberry field). (Chinese legend)

そうでんそうかい(soudensoukai) 【桑田滄海】

(exp) The word is a scene of constant changes (as a mulberry field changing into a blue sea). (Chinese legend)