No matter what miracle a god wished to bring about, it would consume divine power. This divine power would then act according to the god's will, manifesting all sorts of miracles. According to this theory, if Li Chengxi simply wished for these models to move, they should move just like the real thing once he put them in.
However, that was not the case. With the fall of the gods, Li Chengxi, the only one still active, had become the sole god, one could say he was invincible. But being invincible did not mean being omnipotent.
Divine power could accomplish many things, but it was not without its limits; it was still bound by rules. For instance, divine power could not create something that could not be imagined. The remote-controlled cars and drones worked because when Li Chengxi put them in, they were directly scaled up proportionally.