Symbolic Link of the private_html folder for https

Please be excused for my stupid question as I have just migrated from another CP - Direct Admin.

I have installed the SSL here:

http://tokyo-airsoft-gun.com/

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When I am using Direct Admin in the past, there is a private_html folder in the same location of the public_html which I need to setup a symbolic link. However, I cannot find any private_html with my current cpanel setup???

So where is the folder to hold the HTTPS?

/ssl/private

or

/public_html/_private


I have tried the following syntax over SSH, but failed:

[~]# cd /home/username

[/home/username]# ln -s ./public_html ./ssl/private

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or in fact, there is no such step to setup a Symbolic Link with cPanel?

Sincere thanks for anyone who could help to dim some lights to me