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!

nēng, néng, něng, nèng

second tune

néng

energy can; able; capable 能 néng

energy; power 能量 néng liàng
energy 能 néng	capacity；quantity 量 liàng

ability; capability 能力 néng lì
able; capable 能 néng	force 力 lì