The problem of echarts curve chart

recently started echarts, a demand is shown in the picture, now confused is that it a curve is divided into two parts, the background to a time division point, and then this time point before and after the curve with different colors display, read the official documents, too much, scalp numbness, I would like to ask the partner who knows can show the way? Thank you very much.

Mar.23,2021
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-64f5-1b31989-4d446.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b31989-4d446.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
Need Help?