From your description and your pictures the metal cover is removable - just be very careful. You may need some fine pincers or tweezers and it's going to be a fidgety undertaking.
This YouTube video is a review of the Yoga 710 but it has the same metal cover on the RAM module. Go to 3:37 when the reviewer removes the bottom panel. You'll see the metal cover in the upper left corner. The reviewer also removes this cover and explains how to do it.
hi, thanks. but do you look at pictures? there is a metal box that is looks like soldered in mainboard or whatever? it prevent me to access clips. ram is hidden under it, do you mind looking at pics please?
laptop looks like this video as the ram is in same place here: https/www.youtube.com/watch?v=avAnBSGUdC4 I'm not sure what is this box? how to remove it to access RAM? There is full mainboard pic inside picture folder to have a vision on mainboard.