Several parts combine into one character.

The traditional 麵 is a phonetic-semantic compound: 麥 (barley / wheat) + 面 (miàn, "face / surface" — providing the sound). The composite reads as "food made from wheat flour, drawn out long" = noodles. Japan simplified to 麺. Mainland China made an aggressive merger: simplified Chinese collapsed 麵 into 面 — meaning the single character 面 in mainland script covers "face," "surface," "wheat flour," AND "noodles," all four meanings packed into one symbol. This is one of the most consequential simplification mergers and a constant source of confusion for learners moving between traditional and simplified scripts.

Korean reading "myeon." 麵類 (myeollyu, noodle dishes — restaurant menu category), 冷麵 (naengmyeon, cold noodles — North Korean specialty featuring buckwheat noodles in chilled broth, especially Pyongyang naengmyeon), 拉麵 (ramyeon, ramen — Korean instant noodle, transformed from Japanese 拉麺 into 라면 with distinctively Korean spicy character), 素麵 (somyeon, "plain noodles" = somyen, thin Korean wheat noodles).

Mandarin miàn, 4th tone (merged into 面 in simplified). 面条 (miàntiáo, noodles — the everyday word), 拉面 (lāmiàn, "pulled noodles" — hand-pulled noodles, especially the Lanzhou Hui-Muslim specialty 兰州拉面), 方便面 (fāngbiànmiàn, "convenient noodles" = instant noodles), 面粉 (miànfěn, wheat flour). 面 is one of the most semantically loaded characters in simplified Mandarin, requiring context for disambiguation.

Japanese on-reading メン (men) — 麺 (men, noodles), 麺類 (menrui, noodle category). And the global cultural export: ラーメン (rāmen, ramen — written in katakana to mark its hybrid origin) — though etymologically derived from Chinese 拉麺 / 拉面 (lāmiàn), Japanese ramen evolved into a uniquely Japanese culinary form, with regional varieties like 札幌ラーメン (Sapporo, miso-based), 博多ラーメン (Hakata, tonkotsu pork-bone), 喜多方ラーメン (Kitakata) — each its own subculture. Other Japanese noodle types: そうめん (sōmen, thin summer noodles), うどん (udon, thick wheat noodles, often written in hiragana), 蕎麦 (soba, buckwheat noodles).

Memory aid: wheat (麥) + face (面 for sound) — flour-based long food = noodles. Japan/Korea use 麺/麵; mainland uses 面 for everything.