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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jūn, jún, jǔn, jùn

first tune

jūn

Mister; gentleman 君 jūn

man of integrity perfect and true gentleman 君子 jūn zǐ
gentleman 君 jūn	man; son 子 zǐ

military army; troops 軍 jūn

soldier; military personnel 軍人 jūn rén
military 軍 jūn	people 人 rén

equal 均 jūn

average; equally 平均 píng jūn
equal 平 píng	equal 均 jūn

Chinese characters also pronunced jūn

fourth tune

jùn

handsome; good-looking 俊 jùn

handsome spirited and handsome energetic and handsome 英俊 yīng jùn
outstanding 英 yīng	handsome 俊 jùn

steed; fine horse 駿 jùn

swift horse; gallant horse 駿馬 jùn mǎ
steed 駿 jùn	horse 馬 mǎ

germ; bacteria 菌 jùn

bacteria; germs 細菌 xì jùn
tiny 細 xì	germ 菌 jùn

Chinese characters also pronunced jùn