Content Validity:Welcome to bauma CHINA 2024, where the crowd is buzzing at the XCMG pavilion. Our intelligent maintenance service booth has drawn long queues of eager participants. Our virtual operation and maintenance integrated system, with its unique technological features, has attracted a multitude of experiences. Leaders from XCMG have also personally experienced the system, giving high praise for XCMG's technological achievements. Our system, prototyped after the XCA4000 all-terrain crane, integrates immersive VR and AR technologies, achieving virtual maintenance of mechanics, electronics, and hydraulics. Participants are amazed by the operation of the 4000-ton crane, feeling as if they are on-site for wind power installation. Not only is our system used for technical training, but it's also employed for remote maintenance guidance, connecting with experts across time and space to quickly solve difficult problems, improving service efficiency and customer satisfaction. The intelligent scoring function also serves as a professional assessment device for vocational skills in the machinery industry.