How to realize three-dimensional histogram by echart

gallery sees an example, but not very much. The bottom is rounded.
http://gallery.echartsjs.com/.

Mar.16,2022
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-64f5-1e45d88-43644.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1e45d88-43644.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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