Package to Open / Buildings

This is an interactive viewing space
I use the casuarina's salt tolerance for my idea
when the casuarina meets with salt spray
the inside of casuarina will self creat a mechanism
so I image the human as the salt
when human is not enter into the viewing space
therefore the area will be coat a layer fo membrance
then the sunshine can not come in
when human enter into the viewing space
this area will creat an interaction mechanism
the membrance will open automatically
and I use the Pascal's principle
use the liquid's balance and air's gravity to combine the building for my design.