Arch Chinese is a premier Chinese learning system crafted by Chinese teachers in the United States for Mandarin Chinese language learners at K-12 schools and universities. Designed from the start specifically for English speakers who have no or little knowledge of Mandarin Chinese, it offers a rich set of features with a slick and easy-to-use user interface. The features of the system are distilled from the user feedback and feature requests from the Chinese learning community. We also consult with Chinese teaching professionals, from preschools to universities, to incorporate their suggestions and ideas. Arch Chinese has become one of the most popular Chinese learning systems in the United States and other English-speaking countries. Our ultimate goal is to provide a unique, high-quality learning system to help Chinese language learners from around the world to study Mandarin Chinese in a practical, effective and enjoyable manner.