Since the beginning of 2025, China's prominent large model, DeepSeek, has witnessed a dramatic decline in its user rate. The official website's traffic has plunged by over 70% year-on-year, while the utilization rate of its core model, R1, has also suffered a significant drop. Conversely, the usage of ChatGPT and Google Gemini has surged notably. DeepSeek is grappling with a multitude of challenges, including a high rate of factual inaccuracies, limited multi-turn dialogue capabilities, and unstable services. Strategically, the company failed to capitalize on the application ecosystem, and its open-source approach has tarnished its brand image. These factors have collectively eroded market confidence, resulted in a slide in stock prices, and prompted a brain drain within the R&D team.