购买力

• 貝(shell; currency)RADICAL
• 冓(structure; join together)PHONETIC

Using money (shell) to connect buyers and sellers together is what shopping means.

• 乛(hook; hooked radical)RADICAL
• 头(head; leader)ASSOCIATIVE

Shopping is using a hook to pull a valuable item toward yourself.

• 力(strength; muscle)ASSOCIATIVE

The character 力 depicts a flexed arm muscle, symbolizing strength and power.