ocean
滄 centers on a vast, deep body of water: the ocean. It evokes the immense, often cold or dark expanse of the sea.
滄 combines the water radical 氵 with 倉, which likely contributes the sound and may evoke a sense of vastness or storage, suggesting a huge body of water like the ocean.
The water radical 氵 beside 倉, which looks like a storehouse, suggests a vast storehouse of water: the ocean.
For ソウ, imagine the soul of the ocean: soul -> ソウ, and the deep ocean holds the soul of the sea.
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the blue sea; blue waters
the world is a scene of constant changes; a mulberry field changes into a blue sea
the world is a scene of constant changes (as a mulberry field changing into a blue sea)
drop in the bucket; drop in the ocean; one grain of millet in a vast ocean
the world is a scene of constant changes; the blue sea turns into a mulberry field
talented person unbeknownst to the world
great blue sea; ocean