He Ming left the prince on his own devices and slept for two days straight.
It was not natural, because the Duke put sleeping drugs on his food for him to sleep longer.
The Duke really succeeded in stopping him from coming early to the Capital.
His body hasn't recovered yet from all the wounds and bruises so he really needs to take a good rest, Prince Leone at first didn't mind because he knows that He Ming was suffering from his injuries.
However, with nobody else to entertain him and being caged inside the barrier for a long time, Prince Leone grew tired of waiting and started to play with the things he can touch and move.
At first, he doesn't know what exactly happened that made him able to move things in this spirit form... Until he remembered that he went inside He Ming's body and consumed the small remnants of his soul.