label标签地市名字位置如何调整？echarts 配置项内容和展示

如图所示，有些地市的label标签位置不合适，该如何调整呢？

      var uploadedDataURL = "/asset/get/s/data-1521025044538-HkpGlK8KG.json";

myChart.showLoading();

$.getJSON(uploadedDataURL, function(geoJson) {

    myChart.hideLoading();

    echarts.registerMap('guizhou', geoJson);

    myChart.setOption(option = {
        title: {
            text: '贵州省'
        },
        geo: {
            map: 'guizhou',
            label: {
                show: true,
                emphasis: {
                    show: true,
                    color: '#fff'
                },
                color: '#000'
            },
            itemStyle: {
                normal: {
                    areaColor: 'rgba(9,24,47,0.7)',
                    borderColor: '#31a89d'
                },
                emphasis: {
                    areaColor: '#1a3c41'
                }
            }
        }
    });
});