How to troubleshoot the re-render? caused by which attribute of the vue component

there is a page, component A contains component B, component B contains component C. Component A does not pass data like component B and component C, and the properties of component B and component C have changed. Component B and component C are supposed to be re-rendered, but component An inexplicably renders twice more.

The description of

may be a little too simple, so just ask the great gods to tell you how to see the re-render triggered by which attribute the component is triggered by.

Thank you!

Feb.19,2022
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-64f5-1b39c0d-2c1d1.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b39c0d-2c1d1.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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