How to understand that plastic arts have the aesthetic characteristics of "instantaneity and permanence"

The instantaneity and eternity of art is one of the important aesthetic characteristics of plastic arts. The so-called instantaneity of art means that the plastic arts grasp the instantaneous image of its development and change at the intersection of dynamic and static in objective real life, and fix it with the artistic language of materials. Eternity of art means that once the instantaneous image of plastic arts is created, it is fixed by a certain material at the same time, which can be appreciated repeatedly for a long time and even passed down for thousands of years.