The Chinese characters decomposition is the shortest way to memorize Chinese characters.
For example: radicals 冂 jiōng down box, 一 yī one, 二 èr two, 三 sān three in their combinations can make the following characters.
冂 jiōng down box and 一 yī one make 口 kǒu mouth and 囗 wéi enclosure
冂 jiōng down box and 二 èr two make 曰 yuē say and 日 rì sun
冂 jiōng down box and 三 sān three make 目 mù eye, 且 qiě even and 旦 dàn dawn.
More information about the Chinese characters decomposition you can find on Polina Shinkina’s Author Spotlight page http://www.lulu.com/spotlight/polin