You might remember the meaning of the character 撑 with this easy mnemonic:
I used this umbrella (扌) to support myself when I was being tickled (⺍) by my sister. I couldn't stand up straight and had to hold on to this down box (冂) while covering my mouth (口) with my hand (手) to avoid laughing too hard!
Using mnemonics to remember the meaning of Chinese characters like has a huge impact on how long to learn Mandarin it takes.