Why do the two statistical lines of echart do not overlap when the amount of data is the same? the amount of data of the second line is superimposed by that of the first line.

Code directly

 $(function(){
         // pv-uv echarts
        var myChart = echarts.init(document.getElementById("puvcanvas"));

        // 
        var option = {
            title: {
                text: "pv-uv"
            },
            tooltip: {
                trigger: "axis"
            },
            legend: {
                data:["pv","uv"]
            },
            xAxis: [{
                type : "category",
                boundaryGap : false,
                data: ["0:00-0:59","1:00-1:59","2:00-2:59","3:00-3:59","4:00-4:59","5:00-5:59"]
            }],
            yAxis: [
                {
                    type : "value"
                }
            ],
            series: [{
                name: "pv",
                type: "line",
                data: [1000, 2000, 3000, 4000, 50000, 60000],
                stack: ""
            },{
                name: "uv",
                type: "line",
                data: [1000, 2000, 3000, 4000, 50000, 60000],
                stack: ""
            }]
        };

        // 
        myChart.setOption(option);
    });

normally, the pv and uv lines should overlap, but the following results appear. Is there anything wrong with the configuration

?
Mar.29,2021

Hello, remove the stack of each value in series, or don't give them the same value "total"

.
MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1c2b113-33a22.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1c2b113-33a22.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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