Inspired by Dr. J. Marvin Brown and ALG (Automatic Language Growth) programs in Thailand, our team provides an alternative way to learn Mandarin online. We used to teach Mandarin in well-established structure and our students were asked to practice. It seems that these language learners never achieve native-like fluency. One of the explanation to this is adults do not learn foreign language as children do. Now, we provide Mandarin learner online course to acquire language in a natural approach.