where does downcasted object point to?

Question

public class Animal{

    int n = 5;

    public static void main(String[] args) {

        Animal a = new Animal();
        Animal ah = new Horse();
        Horse h = new Horse(); 

        System.out.println(h.n); // prints 7
        System.out.println(ah.n); // prints 5
        h = (Horse) ah;
        System.out.println(h.n); // prints 7

    }
}

class Horse extends Animal{

    int n = 7;

}

My question:

Why does h.n still print 7 after h = (Horse) ah? After the assignment it should point to the same object that ah points and the n field points to 5?