This painting reminds me of the mood of 'the empty mountain after fresh rain.'
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Opening line of 王维 Wang Wei (Tang) 《山居秋暝》: 空山新雨后,天气晚来秋 — 'empty mountain after fresh rain; the weather turns to evening autumn.' A pinnacle of Wang Wei's nature-poetry-as-Zen-painting style.
usage
Usually paired with 天气晚来秋 to complete the couplet. 空 here means 'empty, deserted' — not literally vacant, but humanly still.