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!

sā, sá, sǎ, sà

first tune

sā

cast; spread 撒 sā

tell a lie; to lie 撒謊 sā huǎng
cast; spread 撒 sā	lie 謊 huǎng

third tune

sǎ

sprinkle; spray 灑 sǎ

watering; sprinkle water 灑水 sǎ shuǐ
sprinkle 灑 sǎ	water 水 shuǐ

Chinese characters also pronunced sǎ

fourth tune

sà

thirty; number 30 卅 sà

sound of wind 颯 sà

Chinese characters also pronunced sà