As can be seen from fullerene and the two cyclocarbons increases linearly and rapidly with increasing ring size from C18 to C30. However, the situation is different for the case of C60@2C34, as the interaction between two C34 and C60 fullerene is not much stronger than that in C60@2C30, mainly due to the large ring size of C34 preventing fullerene from perfectly interacting with the two stacked C34, as shown in Fig. . This is also supported by the fact that the average width of the g inter isosurfaces between the cyclocarbons and fullerene in 2C34@C60 is notably lower than that in other trimers. because the larger the carbon ring, the more flexible it is, and thus the easier it is to deform due to external influences. Once again, the C34@C60 shows its specificity because the two stacked C34 interact "incompletely" with C60 fullerene relative to other cyclocarbons, resulting in their being less affected.