You might remember the meaning of the character 肠 with this easy mnemonic:
I had a bad dream that our moon (月) and sun (日) were stolen from the sky, leaving one (一) strange plastic wrap (勹) around our Earth and intestines hanging from the trees, slashing (丿) anyone who walks past it.
Using mnemonics to remember the meaning of Chinese characters like has a huge impact on how long to learn Mandarin it takes.