Solution to SQL Error (2013) connection error in MySQL_MySQL

Phenomena description
Today I used heidisql to log in to the MySQL of the virtual machine, but I couldn’t log in. After waiting for about a minute or two, an error message appears: SQL Error (2013): Lost connection to MySQL server at 'waiting for initial communication packet', system error: 0, as shown in the picture below:

At first I thought it was a remote TCP/IP. Root can only be accessed through localhost. Later, I created a new user and changed it to %, but still to no avail. The problem disappeared after trying to modify the my.ini configuration problem.

Solution
In my.ini or my.cnf
In the [mysqld] item, add

skip-name-resolve

While solving this problem, another startup parameter was discovered:

skip-grant-tables

mysql startup parameters:

skip-grant-tables

As the name suggests, grant-tables, the authorization table, is not started when starting mysql. What is the use? Of course, it is useful when you forget the administrator password or there is a problem with the user table in the mysql database. Using this parameter, any account can log in to the mysql database with any password (including empty, of course).