You might remember the meaning of the character 萍 with this easy mnemonic:
Go gather some duckweed flowers (艹) and put droplets (氵) of water on its dry (干) leaves. Now, don't raise your eyebrows (丷) at me, but I need you to bring this duckweed to the dotted cliff (广).
Using mnemonics to remember the meaning of Chinese characters like has a huge impact on how long to learn Mandarin it takes.