Break Through.

Shi Lang and the other two entered the palace and then moved through the void at neck-breaking speed before arriving at the edge of the desert. They came out of the palace after ensuring nobody was around. The three of them walked over the coarse sand and traveled slowly. 

The void trembled slowly over time. After traveling for three days, they passed by some similar spots and rested. 

Shi Lang said, "The clones I made have also been traveling the battlefield. Although they did not find much, we have much information about this place. The future dwellers will not have a problem. I will draw a map."