How can I use the BrowserRouter of react-router v4 to achieve the same effect in this article?

how can I use the BrowserRouter of react-router v4 to achieve the same effect in this article?

https://dmmylove.cn/articles/36

Apr.07,2022
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-64f5-1b2c545-2bb1b.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b2c545-2bb1b.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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