Douyin's huge classroom refers to online courses for learners opened on the Douyin platform. These courses mainly include various knowledge-based video teaching courses, covering multiple subjects such as mathematics, Chinese, English, physics, chemistry, geography, etc., as well as a variety of interest courses, such as handicrafts, painting, music, etc. Through the huge classroom, learners can study courses anytime and anywhere through mobile devices such as mobile phones and tablets, no longer restricted by time and place, and improve learning efficiency. The advantages of Douyin's huge classroom are rich course resources and accurate course content. At the same time, the system also makes detailed learning records and analyses for learners, so as to better track and guide learners' learning situation. In addition, Douyin's huge classroom also adopts multimedia teaching methods, through rich pictures, videos, illustrations and other forms, to make learning more vivid and interesting, and stimulate learners' enthusiasm and interest in learning.