The following video demonstrates each syllable of the pinyin structure
and the exercise of pinyin/zhuyin with basic Chinese 4-tune pronunciation

Mandarin pinyin tunes
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to link more related multi-character Chinese words!

miū, miú, miǔ, miù

fourth tune

miù

absurd; ridiculous wrong; false; mistaken 謬 miù

fallacy; absurd theory; misconception 謬論 miù lùn
absurd; ridiculous 謬 miù	theory 論 lùn

Chinese characters also pronunced miù