Thank you for your discovery, I think this is the luck of Maya users. I have downloaded and tried to export the gltf file directly from Maya, but the process is not smooth. I am a rookie based on programming, so there are some strange problems when exporting and loading gltf files, but I think this method It is not as convenient as Verge3d integrated into 3dmax export files. I will continue to try to learn. Thanks again to Funjoy.