1, zabbix default title is "zabbix + version number."
2, amend title to find the file:
find / -name zabbix.conf.php
/etc/zabbix/web/zabbix.conf.php
Modify zabbix.conf.php file:
cp /etc/zabbix/web/zabbix.conf.php /etc/zabbix/web/zabbix.conf.php.bak.2019.0528
$ ZBX_SERVER_NAME = "here to fill in their content needs to be modified, can be Chinese."
3, refresh the page and check the change was successful.