The problem of echarts3.x line and scatter plot

after the scatter chart is offset, how to connect with the original coordinates with a dashed line, is it to reset a linetype? How to set the line to the graph of the scatter plot. The second picture is the effect to be achieved

Feb.27,2021
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-64f5-1bddb81-3137b.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1bddb81-3137b.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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