习以为常 (xí yǐ wéi cháng) — to be used to (something), to be accustomed to (something)

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

This origin belongs to the traditional form 習; 习 is its simplified writing.

The traditional form 習 pairs 羽 (wings) with 日 (sun), showing a bird learning to fly; the simplified 习 is a later shorthand.

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

The shape came from a drawing of a person carrying something; in 以, part of that person is still visible on the right.

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

This origin belongs to the traditional form 為; 为 is its simplified writing.

The traditional form 為 showed a hand holding an elephant; the simplified 为 is a later shorthand.

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

常 pairs 巾, a cloth, with 尚 as a sound part; the form originally referred to a lower garment.