Thank you Luc!
I should have read the manual and tips carefully. 
(I did not notice the functionality and I just searched the forum.)
Am I correct? To achieve what I described, we should first find the item in Hook, focus/highlight it, and then press the short cut ⇧⌘R.
I was thinking we could send the external links in Emacs’ Org-mode to Hook and reveal that file in Finder ALL by one shortcut, as I observed that Hook’s Ctrl-h overrides Emacs’ in Org-roam.
Is it doable by the side of Hook? Do we need to config both Emacs and Hook, or even need to employ another software like Hammerspoon to combine them.
Looking forward to hearing your approach!
Cheers