NoLang is an AI-powered explanatory video generation tool. It can generate explanatory videos based on user-inputted text or document content in real time. Main features include: 1. Real-time text-to-video conversion; 2. Automatic video summarization of materials like PDF documents; 3. Continuous dialogue style video generation; 4. Browser extension for on-demand use. NoLang's advantage is making the understanding of complex concepts more straightforward and visual, addressing the issue of low information acquisition efficiency. It primarily targets users who need to obtain information and learn new knowledge and is free to use.