筋疲力尽 (jīn pí lì jǐn) — extremely tired, exhausted, spent (idiomatic)

Two or more meaningful parts placed together so that their meanings combine into a new one.

筋 pairs 竹 (bamboo) with 𠛧 (peel), giving the idea of sinewy fibers from peeled bamboo.

Most characters — around four in five — are built this way: one part hints at the meaning, the other at the pronunciation.

疲 pairs 疒, which shows illness, with 皮, which gives its sound; the character means sick and tired.

A drawing of the thing itself, worn down over three thousand years into a few strokes.

力 is drawn as either an arm bending out from the side of the body or a wooden plough.

Two or more meaningful parts placed together so that their meanings combine into a new one.

This origin belongs to the traditional form 盡; 尽 is its simplified writing.

The traditional form 盡 shows 聿 (hand holding a brush) and 灬 (bristles) over 皿 (dish), cleaning a dish until it is empty. The simplified 尽 is a shorthand, not those historical parts.