Realtek RTL9220(VA/VB) NVMe/USB 3.2 Controller firmware Version 9.34.55

I unscrewed the upper case, remove SSD, and the shell as attachment.
Can you guide me more details how to disassemble to get the mainboard?
I tried using a flat screwdriver to pry it open, but I wasn’t successful.
I attached image link  (I cannot attact image in this post)

drive.google.com/file/d/17sJWV3XlyDdn6_Q-QSUfCBJTS2Rc0kCW/view
drive.google.com/file/d/15gOTMEV5PMkI0XLKDEhPRM8Yh9TvJRUg/view

admin wrote:

Yes, it's easy. Normally, I took the opportunity to put thermal paste on the chipset so that it is in contact with the aluminum part.


 

The Sabret can be dismantled easily, but the Ugreen, yours, is clipped on, so I don't know.