AR is Augmented Reality. Through AR, the people and objects you see are real or fictitious, as it can bring virtual information to the real world. AR is a new human-computer interaction technology. Through the technology, participants can interact with virtual objects in real time to obtain a wonderful visual experience. Moreover, they can break through space, time and other objective limits to go through what cannot be experienced in the real world. This course focuses on the application of AR virtual simulation to welding training, helping you experience this technology up close and understand the differences between the technology and conventional welding training.