顺带一提

• 川(river flow downstream)ASSOCIATIVE
• 頁(head; person's head)RADICAL

A person's head following the river's flow downstream shows the meaning of going along smoothly without resistance.

• 巾(cloth scarf; fabric wrap)RADICAL
• 冖(cover; conceal)ASSOCIATIVE
• 卅(thirty; cord-like shape)ASSOCIATIVE

A belt is a strip of cloth wrapped tightly around the body, covering the waist area.

• 一(first; number one (pictographic))ASSOCIATIVE

A single horizontal stroke symbolizes the number one, the beginning of all things.

• 扌(hand)RADICAL
• 是(correct; be)PHONO-SEMANTIC

Using your hand to grasp what is necessary represents the elevated and exalted action.