Cesium3DTileset mashup imageryLayers Help

Help me!!!
I want to post Cesium3DTileset mashUp imageryLayers…
Is there a way
Please tell us

Welcome to the Cesium community!

Do you mean you want to add a 3D Tileset on top of imagery layers in your scene? Make sure you’re familiar with the Cesium basics by checking this tutorial: https://cesium.com/docs/tutorials/getting-started/ and then you should be able to find what you need on Sandcastle code examples: https://sandcastle.cesium.com/index.html?