Skritter will fix your Mandarin handwriting and tones if you use it regularly. https://news.ycombinator.com/user?id=nwinter https://news.ycombinator.com/user?id

Skritter will fix your Mandarin handwriting and tones if you use it regularly. https://news.ycombinator.com/user?id=nwinter https://news.ycombinator.com/user?id=nwinter who did it is now doing a game to teach coding invested in by ycombinator.