I have been taking 1-on-1 off-line classes at That’s Mandarin for one and half months. The teacher is knowledgeable and well skilled in teaching. The school pays good attention to my needs and the classes take place in a positive and encouraging atmosphere. Furthermore, their on-line platform (nihaocafe.com) is well designed and allows to access learning material, review classes, and learn vocabulary and grammar very efficiently.Great learning experience so far.