Famous in 黄粱一梦 — the 'golden-millet dream', a Tang tale where a man lives a whole rich life in a nap that ends before the millet finishes cooking. The lesson: worldly glory is fleeting.
Top-left water element, carried over from 梁 (beam), which shares this upper structure. Here it is part of the borrowed shape, not a meaning about water.
phonetic
刅chuāng
(here) sound element
Top-right element, part of the abbreviated 梁 serving as the phonetic that gives this character its sound liáng.