We are a technology-driven education company. According to Frost & Sullivan, we are the third largest online K-12 large-class after-school tutoring service provider in China, in terms of gross billings in 2018. We adopted the online live large-class format to deliver our courses, which we believe is the most effective and scalable model to disseminate scarce high quality teaching resources to aspiring students in China. Our core expertise is in online K-12 courses, covering all primary and secondary grades, which contributed over 73% and 75% of our total revenues in 2018 and for the three months ended March 31, 2019, respectively. We also offer foreign language, professional and interests courses. To create a disciplined, effective and engaging learning environment under the large-class format, we have adopted a dual-teacher system. We conduct each class with an instructor and multiple tutors who are well-versed in the course materials and attentively supervise each student. Our instructors deliver the courses in online live large-class format, while our tutors provide academic and administrative support to each student during and after class hours. This system empowers thousands of students to simultaneously learn from the high quality instructors while enjoying the 1-on-1 close attention by our tutors. We design our courses in ways to inspire students’ genuine interest and in-depth interactions, which in turn foster students’ holistic development and thus better learning results.