Chinese · Pronunciation Guide
Say "buy" with the breath held back on the b, then sink the pitch to the bottom of your voice. In practice you will nearly always meet it as yìbǎi.
bǎi
Standing alone it dips, but 百 almost never stands alone — it is preceded by a number, and that is where the interesting change happens. Since bǎi is a third tone, a preceding 一 flips to a falling fourth: yìbǎi. Before another third tone 百 itself would rise, though that combination is rare in practice.
Listen: 百
Free browser voice. Hear it read by a real native speaker inside the LingoDrop app.
这个一百块钱。
Zhège yìbǎi kuài qián.
This costs a hundred yuan.
Listen: 这个一百块钱。
Free browser voice. Hear it read by a real native speaker inside the LingoDrop app.
这个一百块钱。 shows the sandhi already applied in the pinyin: yì rather than yī, precisely because bǎi carries a third tone. After that, kuài falls hard and qián rises, so the price phrase ends by climbing. The zhège at the start is a fall plus a toneless syllable, which is why the sentence begins with a small drop and then a flat patch.
Two things go astray. The vowel often comes out as the tight English "eye" of "buy" rather than opening properly on "ah" first; widen the mouth at the start. More seriously, learners produce a strongly aspirated "pai", which is a different syllable entirely — 拍 or 排 depending on tone. Keep the breath in and let the release be silent.