I Can Change the Size of Everything

He Ping has superpowers that can change the size of all things. In this world where superpowers exist but superpowers are extremely rare, science is the largest system. However, Heping's superpowers have no limit. He can even shrink a planet to the size of an atom, subatom or even smaller. So, what will he, who is almost invincible, do? This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.