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!

wā, wá, wǎ, wà

first tune

wā

frog 蛙 wā

dig; excavate grub; scoop out 挖 wā

Chinese characters also pronunced wā

second tune

wá

baby; child; doll 娃 wá

third tune

wǎ

roofing tile 瓦 wǎ

fourth tune

wà

socks 襪 wà