Everything changes.
We have a lot of Buddhist relics from splendid ancient Shilla dynasty. We do not think it couldn’t be changed easily but it also comes apart in the end. Only time matters. Even though they have specific figures, the basic materials which are used to make are the same, but we think what looks like is what it really is. It transforms to shapes of Buddha or shapes of pagodas. We only focus on the appearances of what we face not the basic material to be used to make.