If there is any ultimate stuff of the universe, it is pure energy, but subatomic particles are not “made of energy”, they ARE energy.
This is what Einstein theorized in 1905. Subatomic interactions, therefore, are interactions of energy with energy. At the subatomic level there is no longer a clear distinction between what is and what happens, between the actor and the action.
At the subatomic level the DANCER and the DANCE are ONE