The drilldown problem of echarts map

the provincial map has coordinate points. Click to drill down to the city map, and then according to the addition of coordinate points, how to do it? now I have added it at the provincial level. After drilling down, I can"t always add it up

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Mar.07,2021
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-64f5-1b30dd4-2bd46.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b30dd4-2bd46.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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