Pinyin — Day 5 — The Hard Checkpoint: z c s vs. zh ch sh r
This is the hardest day of week one — two consonant sets that sound deceptively similar but use completely different tongue positions. Listen closely to every example.
Today's Vocabulary
在
at; in
我在家。
Wǒ zài jiā.
I am at home.
菜
dish; vegetable
这个菜很好吃。
Zhège cài hěn hǎochī.
This dish is very tasty.
三
three
我有三个朋友。
Wǒ yǒu sān gè péngyou.
I have three friends.
中国
China
他是中国人。
Tā shì Zhōngguórén.
He is Chinese.
吃
to eat
我吃米饭。
Wǒ chī mǐfàn.
I eat rice.
是
to be; yes
他是老师。
Tā shì lǎoshī.
He is a teacher.
热
hot
今天很热。
Jīntiān hěn rè.
Today is very hot.
Today's Grammar
Flat-tongue set (z c s): tongue tip touches behind the upper teeth. z = unaspirated "ts", c = aspirated "ts", s = "s". Retroflex set (zh ch sh r): tongue curls back to touch the roof of the mouth. zh/ch/sh are the retroflex versions of z/c/s, and r is a buzzy curled-tongue sound — not rolled/trilled, just a gentle vibration. ⚠️ Critical warning: the "i" after all 6 of these letters (z c s zh ch sh r) is NOT the "ee" sound! zi ci si zhi chi shi ri are pronounced as a buzzed extension of the consonant itself, NOT "jee chee shee".
在
"at/in" — z is flat-tongued, unaspirated
菜
"dish/vegetable" — c is flat-tongued, aspirated
三
"three" — s is flat-tongued
中国
"China" — zh is retroflex
吃
"to eat" — ch is retroflex (NOT "chee"!)
是
"to be/yes" — sh is retroflex
热
"hot" — r is a gentle retroflex buzz, not rolled