GSX Techedu operates as an online education company. It provides online K-12 large-class after-school tutoring services. The company offers English courses for children in kindergarten; and courses that help children in grade one through grade seven. GSX Techedu also provides foreign language courses, including English, Japanese, and Korean, as well as English test preparation courses for students taking post-graduate entrance exams in China; and professional courses primarily for working adults preparing for professional qualification exams comprising teacher's qualification, the Chartered Financial Analyst designation, fund qualification, and securities qualification exams.