       });

            var center = Cesium.Cartesian3.fromDegrees(114.289398, 30.59418345, 50000.0);
            map.scene.camera.setView({
                destination: center
            });

            var origindatasource = map.dataSources.add(Cesium.GeoJsonDataSource.load(origindata, {
                stroke: Cesium.Color.BLACK,
                fill: Cesium.Color.GRAY,
                strokeWidth: 15
            }));
            map.flyTo(origindatasource);
        }

        function loadData() {
   