Thanks @abadesi ! Zizzle is actually a pretty good app to learn Chinese characters. I personally think it will be most effective if user have achieved certain level of fundamental. I am still learning the language and I use Zizzle too! About our bot, we designed it around common problems and needs. Problems like feeling embarrass to speak broken Chinese in front of people and/or nobody to practice with. So we developed this bot to allow anyone to learn and make mistake without the embarrassment :) It serves 3 needs. The need to practice conversation, reading and typing in Chinese. If you ever visit China again, try our restaurant chat scenario. You won't go hungry in China at least!