Leave a trace & remove it

Second stage for my work is about leave a trace & remove it.

I think that I have a lot of memories but lots of my memory has deleted from me,

so the reason why I tried to make that.

First one is what I record something and cut it which means leave a trace and remove it.

Second one is about Yiheyuan that was built by digging and piling to make lake and hill.

This is also the action to leave a trace and remove it in space area.

Last one is my face and remove half of it, so it looks like profile.