Tencent classroom. Zhang Yu is a teacher of advanced mathematics, mainly focusing on advanced mathematics. 18 The topic video after the lecture was watched in Tencent classroom. Tencent Classroom is a professional online education platform launched by Tencent, which brings together a large number of high-quality educational institutions and famous teachers. It consists of many online learning quality courses such as vocational training, civil service examination, TOEFL IELTS, textual research and grading, oral English, primary and secondary education and so on. To create a classroom where teachers teach online and students learn interactively in time.