异口同声 (yì kǒu tóng shēng) — to speak in unison, to all say the same thing (idiom)

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

This origin belongs to the traditional form 異; 异 is its simplified writing.

The traditional form 異 depicts a person with a mask 田 over the face, so the face looks different. The simplified 异 is a later shorthand.

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

The form 口 looks like an open mouth.

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

同 originally drew a pipe. It is the old form of 筒.

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

This origin belongs to the traditional form 聲; 声 is its simplified writing.

The traditional form 聲 pairs 耳 (ear) with 殸 as a sound part; the simplified 声 is a shorthand and does not show those original parts.