What's inside?

Liu Feng looked into this cave as well. He was curious as to what the cave contained. 

For a resting place of a constellation beast, as well as the center of an entire world, it had to have something special. 

"Do not enter. You are not strong enough. I told you about the zones with an incredible amount of Qi, but with pressure so strong that they might kill you. This is one of them. Only I can enter here." Liu Man stopped Liu Feng from advancing any further. 

Sighing, Liu Feng accepted this, and looked around instead. Although he just found out that the scenery around him was just an illusion, he could not help but marvel at how real it was. 

He bent down to touch the grass, and it felt like real grass. But he did know now that if he tried to fly up and touch the sun, all he would touch is some barrier.