Rounded pebbles are gathered together and look more beautiful.
It has been washed in rain and wind for quite a long time and now it has become round gravel.
All of the stones were initially rugged, but they changed a lot over the years.
Life is the same.
It is age, and it seems that the personality of the person becomes smooth when time passes.
It would be better if people living together like that.
It is a good idea to look like a group of similar rounded pebbles.