Now, whenever we're talking about lushly as principle and we see that we have heat produced or heat in the beginning, that means we can treat this heat sky as a product. So our heat is tangible, okay? So now let's increase the temperature of our system of our reaction. Now, we increase temperature by adding energy and that means we're adding heat. Now, if we're adding heat, that means one of our products, namely the heat guide is increased. So the concentration is not really concentration but you could think of energy concentration of our heat increases.