The old master mounted and remounted this painting.
Tips
usage
Two senses: a pond of stagnant water (literary), and 'to mount/decorate' as in 装潢 (to mount a scroll; by extension, to decorate or do interior design).
Left 氵 is the water radical 水 in left-side form. The base sense is a pool of standing water; the mounting sense comes from wetting paper to paste a scroll.