@yuan1405
Thanks for your question. We don’t yet have a system in place for navigating using the mouse. This may be something we implement in-game: CesiumJS-style camera · Issue #11 · CesiumGS/cesium-unreal · GitHub as well as in a custom editor mode: Editor: Globe aware camera · Issue #325 · CesiumGS/cesium-unreal · GitHub
In the meantime, if you want to implement your own system for mouse navigation, here’s some pointers on how it works in CesiumJS: CesiumJS-style camera by xuelongmu · Pull Request #319 · CesiumGS/cesium-unreal · GitHub
@wikkic Quest 2 / Android support is planned for the near future: Building for Oculus Quest 2