How to insert Chinese garbled Characters During MYSQL programming in Linux

Inserting Chinese characters is garbled and many methods have been tried. For example, I first set "set fileencoding = UTF-8" in vim to not work. Later I thought It was correct. It has nothing to do with vim.
Then try the c # code and use the Encoding. UTF8.GetString () method, which is not correct later.
I was so depressed that I suddenly remembered that it was not a problem with mysql settings ???
Therefore, sudo nano/etc/mysql/my. cnf
Insert the following red code: default-character-set = utf8. The code is successfully inserted. No garbled characters are displayed ~~~ There is no need for Encoding .....
# This was formally known as [safe_mysqld]. Both versions are currently parsed.
[Mysqld_safe]
Socket =/var/run/mysqld. sock
Nice = 0
[Mysqld]
#
# * Basic Settings
#
User = mysql
Pid-file =/var/run/mysqld. pid
Socket =/var/run/mysqld. sock
Default-character-set = utf8
Port = 3306
Basedir =/usr
Datadir =/var/lib/mysql
Tmpdir =/tmp
Language =/usr/share/mysql/english
Skip-external-locking