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
Click the framed calligraphic Chinese symbol icons
to link more related multi-character Chinese words!

nāng, náng, nǎng, nàng

second tune

náng

bag; sack 囊 náng

capsule (medicine) 膠囊 jiāo náng
rubber 膠 jiāo	bag; sack 囊 náng

third tune

nǎng

past, former 曩 nǎng