 || []
                    };

                    group.children.push({
                        type: 'text',
                        style: {
                            x: cellPoint[0],
                            y: cellPoint[1] - cellHeight / 2 + 15,
                            text: echarts.format.formatTime('dd', api.value(0)),
                            fill: '#777',
                            textFont: api.font({fontSize: 14})
                        }
                    });

                   