If you consider the giant rat as a small cat or dog, then Mu Can's size now is no different from that of a little flea.
And now, this tiny flea was about to make a move. As it turns out, size isn't everything.
When Mu Can reached the giant rat's leg passing through the dilapidated city on its back, the giant rat didn't even notice his presence. It was still focused on healing the terrifying wound on its back caused by Mu Can's recent explosive attack. Although Mu Can's size was just a fraction of the giant rat's, the attack that he had launched with all the Fire Attribute Spiritual Power in his body had indeed inflicted some damage on the giant rat.
Without any obstacles, Mu Can smoothly arrived at the giant rat's leg. Truly a massive creature indeed—its thigh was like the Sky-reaching Pillar, its skin looked extremely tough. The hairs lying flat on its skin each shimmered with a sharp gleam.