There or not there?

After setting out from the guild base, Liam and the group started wandering around the vast landmass that now constituted territory 6. This region not only consisted of China but almost the entirety of Asia, leaving out only a few parts.

This was a huge chunk of land they had to cover, but to start with, Liam decided to just stick with their country, China. They had already encountered two hive hills in the southern part of the country, so he was confident that there should be more in the vicinity.

However, this confidence was quickly broken down. As the group moved through the various cities and districts at an impressive speed, they were yet to come across a single hive hill. 

This did not make sense because there were already two in such close proximity, so why was the third one so difficult to find? Unlike the portals that had popped up in every corner, it looked like the hive hills were rather rare.