The MySql 8.0.16 version installation prompts that "UTF8B4" is used instead of "UTF8B3"

[mysqld]
# Set port 3306 port=3306
# Set the installation directory of MySQL basedir= #Remember to fill in here# Set the storage directory of MySQL database data (this directory will be generated by commands later, no need to write it manually)
datadir= \data #Remember to fill in the maximum number of connections allowed max_connections=200
# The number of connection failures allowed. This is to prevent someone from trying to attack the database system from this host max_connect_errors = 10
# The default character set used by the server is UTF8B4
character-set-server=utf8mb4
# The default storage engine that will be used when creating a new table default-storage-engine=INNODB
# By default, the "mysql_native_password" plug-in is used for authentication. default_authentication_plugin=mysql_native_password [mysql]
# Set the default character set of the mysql client to default-character-set=utf8mb4 [client]
# Set the default port used by the mysql client to connect to the server port=3306 default-character-set=utf8mb4