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!

cōng, cóng, cǒng, còng

first tune

cōng

hurried; hasty; hastily 匆 cōng

onion; green onion 蔥 cōng

clever; astute quick of apprehension 聰 cōng

smart; intelligent 聰明 cōng míng
clever; astute 聰 cōng	bright; understand 明 míng

Chinese characters also pronunced cōng

second tune

cóng

obey follow; follower 從 cóng

shrub; thicket crowd together 叢 cóng

jungle 叢林 cóng lín
thicket 叢 cóng	woods 林 lín

Chinese characters also pronunced cóng