Credits
Open work this course is built on, and the people who made it.
Pronunciation audio
The tone and pinyin listening exercises use native-speaker recordings from the audio-cmn open corpus, part of the Shtooka / SWAC project. Syllables recorded by Chen Wang; word recordings by Yue Tan. Compiled by Hugo Lopez.
Licensed CC BY-SA 3.0. The recordings are served unmodified.
Character stroke data
Stroke-order animations use Hanzi Writer and its Make Me a Hanzi data (LGPL / Arphic Public Licence).