The Giants created many things. They created elemental beings, new races, even new planets, and new Planes!
However, the Giants ultimately decided that all of this was unimportant. To get closer to godliness, they believed they needed to create true wisdom the same way as God!
Because of this belief, the Giants created the Human Realm, the planet where humans dwell.
The Giants did not grant humans any special powers. They simply wanted to observe how humans would solve all of their problems through wisdom alone.
This book describes all of these things. The Dragon Clan had not yet betrayed the Giants at this point in the timeline.
When Long Yi awoke from the world within the book, he felt as though he could hardly breathe. The Giants in the book terrified him!
They could easily create new Planes, easily create new planets! If they so wish, they could even easily annihilate all life in a Plane!