The project is a virtual fashion showroom, where exhibits are not presented in 3D, but play character videos, with interactive collection elements that guide the viewer through the exhibits. At the beginning of the project, it was made by an artist only, and lacked the necessary operation, movement, stereoscopic UI and other systems for VR, and had serious performance problems. When the engineers joined the project, it was too close to the end of the project to modify the existing content, We decided to cut almost all of the content and redo it with the minimum runnable version as the goal. My contribution: - Took over project management midway through the project, reworking everything from version 8 onwards and closing it out at version 13. - Controlled movie detection based on audience state. Video was one of the performance challenges faced by this project. Character videos needed to be overlaid with back masks, which resulted in nearly 60 HD videos playing simultaneously in the scene. I instructed the artists to reset the viewing line to reduce the number of videos visible in the viewer's field of view so that the number of simultaneous character videos would remain at 3 Group (6 videos), and to play or pause individual videos according to the direction of the viewer's line of sight and the distance between the two videos. - A feature to prevent viewers from deviating from the viewing path, following the approach used in Half-Life: Alyx, where the field of view is obscured when viewers move through walls, while displaying directional cues indicating the nearest route back to the correct path. - Interactive gameplay, such as portals and picking up objects. - Scene switching system to improve the performance, cut the main scene into inside and outside the museum parts, cut the static elements, interactive elements and lighting into different scene layers, add intro and outro, operation introduction and Roll Card scenes.