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!

zē, zé, zě, zè

second tune

zé

duty; obligation; responsibility blame; reprove 責 zé

responsibility 責任 zé rèn
duty; obligation 責 zé	responsibility 任 rèn

select; choose 擇 zé

choose; choice select; selection 選擇 xuǎn zé
choose 選 xuǎn	select; choose 擇 zé

Chinese characters also pronunced zé