blue waves; blue wave; hair that has lost its shine due to ageing
the blue sea; blue waters
the world is a scene of constant changes; (lit.) a mulberry field changes into a blue sea
drop in the bucket; drop in the ocean; (lit.) one grain of millet in a vast ocean
the world is a scene of constant changes; (lit.) the blue sea turns into a mulberry field
the world is a scene of constant changes (as a mulberry field changing into a blue sea)
talented person unbeknownst to the world