This project is based on the Unreal Engine 5(UE5) production completed, covering the virtual simulation experiment, virtual AI teacher digital human two main parts. 1. in virtual simulation experiment system In the virtual simulation experiment system, the powerful function of Unreal Engine 5(UE5) is fully exerted, and the virtual experiment environment under different environments is constructed. The core purpose of this environment is to explore and verify Newton's second law under different gravitational systems, so that this classical physical principle can be vividly presented in the experiment. By taking full advantage of Unreal Engine 5(UE5)'s exceptional customizability and realistic graphics rendering, users will be immersed in a realistic virtual experiment. With the powerful physics engine function of UE5, the virtual experiment scene will be able to highly restore the physical laws and behaviors in the real world. The user can adjust the mass of the object, the applied force, and other experimental parameters, and then observe the simulated object motion and interaction. In addition, the virtual environment will offer different options for experiment scenarios. Users can explore the behavior of objects under the surface of the moon, or conduct experiments in a microgravity environment in a space station. These diverse scenarios will help users more fully understand the applicability of Newton's second law in different environments. 2. in Virtual Digital Human System The system mainly covers two key parts: the construction of local large language model and the generation of realistic digital human. 1. For large language model construction, we chose ChatGLM as the base model and customized the model by creating a fine-tuned corpus. By fine-tuning on this corpus, we succeeded in endowing the model with project-specific context and knowledge. The application of this customized model not only improves the accuracy of the Q & A application, but also enables users to interact more deeply with the system and obtain more targeted answers. Finally, the question-and-answer application based on the local knowledge base is realized, which makes full use of the local customized large language model. This application integrates langchain ideas, allowing users to quickly access the knowledge base in a local environment and obtain accurate, project-related questions. This not only provides users with convenient access to knowledge, but also demonstrates the technical achievements of the project in the field of digital people and language processing. 2. Digital human construction. We use METAHUMAN technology to carefully create a lifelike digital human model of AI teachers, which significantly improves the interaction experience between users and the system. Give full play to the power of METAHUMAN technology, creating a realistic and lifelike image of digital people. These digital human models are able to interact with users in a virtual environment, adding to the project's interactivity and immersion.