These three great minds keep astonishing me by their outstanding learning capability and attitude. They are specialists from different realms and also have lived in Taiwan for difference length of time, from 5 months to 5 years. However learning Mandarin is their committed decision in common. This Saturday early morning, they should acquire the relatively complicated part of big numbers in 5 minutes! How great the logic is! As their teacher, my commitment is making you all keep learning as efficiently as possible, and bringing the laughter and fun with us all the way.