Top: sinking/going down 莫 (The plants 艹 are made by the sun 日 to be large 大 [= as long shadows] at sunset.), below: cloth 巾 [Watch out: Sunrise is: 旦 or ]
Mnemonic
It is "sinking" (= hanging down): This cloth is a curtain.
The plants 艹 are made by the sun 日 to be large 大 (= as long shadows) at sunset. - Please be aware that this very similar radical stands for the sunrise.
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