Recently, the AI Assistant DeepSeek surprisingly launched an official app, covering both iOS and Android versions. The release was quite low-key, with even DeepSeek not conducting extensive promotion. Currently, DeepSeek's features are relatively simple and straightforward, focusing primarily on 'deep thinking' and 'online search'. Deep thinking involves generating an internal reasoning chain before answering user questions, analyzing the problem step by step, and arriving at a conclusion, utilizing DeepSeek-R1-Lit.