Recently, NetEase Youdao has discreetly launched the closed beta testing of its inaugural AI knowledge base product. This innovative tool is designed with students, professionals, and researchers in mind, offering a core functionality centered around the meticulous organization of extensive source files. It boasts the capability to provide responses within seconds and generate varied outputs. What sets it apart is that every answer it provides can be traced back 100% to the original text, ensuring both efficiency and reliability as an AI research assistant. In comparison to similar overseas counterparts, this product is more attuned to the preferences of domestic users, particularly in terms of textual expression within professional domains and the generation of Chinese audio. The commencement of this closed beta testing marks a significant stride forward in the realization of NetEase Youdao's Agent ecosystem, playing a pivotal role in shaping its comprehensive AI product matrix.