Go import self built package

1.go mod init Yours mudlename
（ Execute the command under the project folder ）

For example, the package name here is wjj/ginessetial

2. Create your own package , And in main.go Introduction in
Create a new folder , For example, here is DB

DB Created in the go The name of the package is db

So when you are main.go Medium to call DB A function under the folder ( This is Initdb), How to import the corresponding package ?
stay main.go in , It should be written like this when introducing :

import " Yours modulename/ Project root / Function folder "

For example, I want to introduce DB Packages in the directory , That's it :