In addition: I found the problem. There is no download option for Predictive Code Completion in the Compone in my Xcode settings. Text edit tells me that my country does not support it. I am in China, and the machine was also bought in China. Is the error of Xcode wrong or is it really not available in China? If so, can I solve it through VPN or other methods?

I asked Apple a similar question a few days ago, that is, if the anchored real object is moved, it can be followed, and their reply is that it can be followed as long as there is no large area of occlusion and the movement speed is not too fast. So for your problem, as long as the user's hand does not cover the globe too much and the rotation speed is not too fast, it should be able to follow normally.

Of course it's okay.

@sadaotokuyama I found that this problem is not a problem with the code, but a problem with the USDZ model, because when I use the code you gave me to display the USDZ model you provided on GitHub, I can play the animation normally, but when I use the same code to display my own model, it does not It can play animations. I hope you can tell me how to solve it, thank you!