You might remember the meaning of the character 欧 with this easy mnemonic:
Although Europe is fun, you have to find some hiding enclosures (匸) in your backpack so that even if someone slashes (丿) your bag open, they'll only find a lack (欠) of money because you hid it so well.
Using mnemonics to remember the meaning of Chinese characters like has a huge impact on how long to learn Mandarin it takes.