There were many routes to reach Gray Valley from where Ye Chong and the Sang tribe were now. However, all of them required the group to travel through a large part of the He Yue galaxy. This was extremely dangerous for Ye Chong and the rest. While full-skeleton mechs had anti-detection properties, the probability of being discovered if they followed any of these routes was higher than 80 percent. Besides, without Mu and Shang, it was impossible for Ye Chong to discreetly bribe their way through without leaving a trace.
Hence, Ye Chong chose another route. They would fly parallel to the Calamitous Asteroid Belt. It was equivalent to making a big roundabout along the asteroid belt. While the distance was longer, they would be inside the asteroid belt throughout the journey, which made it less likely for the Three Aristocratic Families to find them.
