Cesium loads ArcGIS

Cesium loads ArcGIS satellite images

tdtLayer = new Cesium.ArcGisMapServerImageryProvider({
    
    
                url: 'https://services.arcgisonline.com/ArcGIS/rest/services/World_Imagery/MapServer'
            })
            viewer.imageryLayers.addImageryProvider(tdtLayer);

Cesium loads ArcGIS street maps

 tdtLayer = new Cesium.ArcGisMapServerImageryProvider({
    
    
                url: "http://services.arcgisonline.com/ArcGIS/rest/services/World_Street_Map/MapServer",
            })
            viewer.imageryLayers.addImageryProvider(tdtLayer);

Cesium loads the ArcGIS blue map

tdtLayer = new Cesium.UrlTemplateImageryProvider({
    
    
                url: "https://map.geoq.cn/arcgis/rest/services/ChinaOnlineStreetPurplishBlue/MapServer/tile/{z}/{y}/{x}",
            })
            viewer.imageryLayers.addImageryProvider(tdtLayer);