(Hyper)polarizability density is a very useful manner to visually exhibit contribution of different regions to molecular (hyper)polarizability. It can be seen from the (hyper)polarizability density for Li + @C18 in in Figure that for i = x and y, the In order to visually display the interesting anisotropic character of the molecular (hyper)polarizability rom different perspectives, the unit sphere representation map of (hyper)polarizability tensor of Li + @C18 in is plotted and shown in Figure . The anisotropy of the (hyper)polarizability of Li + @C18 in is clearly visible from the tensor maps, and the hyperpolarizability tensors parallel to the ring plane is significantly stronger than that of the perpendicular one. More specifically, for polarizability and second hyperpolarizability, the tensors in all directions along the plane are identical, while the tensors of first hyperpolarizability clearly follows the negative x-axis direction. The characteristics of molecular (hyper)polarizability tensors are consistent with the values of the (hyper)polarizability components analysis above.