echarts label鼠标移上去显示移开隐藏

echarts yekong 2481℃
label: {
                        normal: {
                            show: false,
                            position: 'outside',
                            formatter: '{a|{b}:{d}%}\n{hr|}',
                            rich: {
                                hr: {
                                    backgroundColor: 't',
                                    borderRadius: 3,
                                    width: 3,
                                    height: 3,
                                    padding: [3, 3, 0, -12]
                                },
                                a: {
                                    padding: [-30, 10, -20, 10]
                                }
                            }
                        },
                        emphasis: {
                            show: true,
                            position: 'outside',
                            formatter: '{a|{b}:{d}%}\n{hr|}',
                            rich: {
                                hr: {
                                    backgroundColor: 't',
                                    borderRadius: 3,
                                    width: 3,
                                    height: 3,
                                    padding: [3, 3, 0, -12]
                                },
                                a: {
                                    padding: [-30, 10, -20, 10]
                                }
                            }
                        }
                    },
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