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!

pōu, póu, pǒu, pòu

first tune

pōu

cut open; dissect analyze; examine 剖 pōu

anatomize; anatomy dissect; dissection 解剖 jiě pōu
solve; understand 解 jiě	dissect; examine 剖 pōu