Search4All is a question-answering system built on a large language model. It can answer various types of questions, including factual, explanatory, and analytical questions. This system utilizes advanced natural language processing techniques to deeply understand the meaning of questions and provide accurate responses. It boasts a vast knowledge base encompassing history, geography, science, art, sports, and more. Additionally, it possesses a certain degree of reasoning and analytical capabilities, enabling it to perform logical analysis on complex questions and offer suggestive answers. Using Search4All can help users quickly access the information they need and enhance their work efficiency.