← K2 中文

说 Speaking

AI features are experimental. You'll practice a small set of curated sample sentences.
Syllables:
· HSK 1/2/3/4/5 · 4 targets
Read aloud
妈
mā
mother
Tone: 1
Tap, then say 妈. Up to 2.5s; auto-stops on a longer pause after you've spoken.
Microphone access not available in this browser.
Speech recognition not supported (try Chrome / Edge / Safari for transcription).
You can still record and see your pitch curve below — the match is just unavailable.
Pitch curves are normalized to your voice range so a low or high voice maps to the same shape. The match check ignores tones — use the pitch chart to self-judge tone accuracy.

Chinese speaking and tone practice

Say a Mandarin word or phrase into your microphone and see your pitch drawn live as you speak.

Tones are the part of Chinese you cannot learn from reading, and watching your own voice rise and fall makes the difference between 妈, 麻, 马 and 骂 something you can actually correct.

How K2 picks your next card

Every card has a temperature. Get it right and its chance of coming back halves; miss it and it doubles. K2 picks the next card at random, weighted by that chance, so a session keeps returning to whatever you are getting wrong and lets what you know fade into the background.

When the cards you are working on have cooled, a new batch joins them, so you always study at the edge of what you know. There are no review dates and no daily queue to fall behind on. Every drill is free and works without an account, and everyone gets 20 free AI uses a day; past them, signed-in AI practice runs on your Bike4Mind credits.