descriptive · turning gray or white, typically referring to hair or beard

他已是两鬓苍苍。

descriptive · lush, green, and growing luxuriantly

蒹葭苍苍，白露为霜。

descriptive · vast and hazy in appearance, often describing the sky or a distant horizon

天苍苍，野茫茫，风吹草低见牛羊。