C420 Personalized
Eh!
Just as Yang Huang was about to leave in disappointment, he suddenly realized that there was a black object at the bottom of the bookshelf. Through the thick dust, he could vaguely see the traces of a piece of paper.
Since he couldn't find anything on it, then...
Taking a few steps to the last empty bookshelf, Yang Huang bent down and picked up the black object.
It was light as a feather
