Pinyin · day 7 and after
The whole map
20 sounds from all six units, mixed. Take it cold before day 1 as a baseline, again on day 7, then one round in a gap each day until it holds at 18.
The check
20 sounds · 18 right is solid
Earbuds in. Each sound plays as its question appears — replay it as often as you like, then pick what you heard.
Your pinyin receipts
Every run, oldest first. You won't feel your ear sharpen day to day — you'll see it here.
Review videos
Yoyo's six review lessons: day 7's walk or ride.
Native recordings: Chen Wang (syllables) and Yue Tan (words), from the audio-cmn project, CC BY-SA. Source