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!

cuī, cuí, cuǐ, cuì

first tune

cuī

urge; press for; push for 催 cuī

break; smash destroy; devastate; ravage 摧 cuī

third tune

cuǐ

glitter of jade luster of gems 璀 cuǐ

bright and resplendent; lustrous and brilliant glittering and imposing; splendid and dazzling 璀璨 cuǐ càn
glitter; luster 璀 cuǐ	brilliant; lustrous 璨 qiǎn

fourth tune

cuì

crisp; crispy 脆 cuì

green jade bluish-green; emerald-green 翠 cuì

Chinese characters also pronunced cuì