The Avast Mountains
The Avast Mountains. The large mountain range in the north of this city - it connected Huizhou and Shenzhen perfectly, and served as a nice border as well. No one dared to venture through this place, since not only was the road tiresome - but short compared to other routes - it was also infested with danger. Monsters, Magic Beasts, you name it - they all resided within the Avast Mountains and its surroundings.
The parts of the mountain range close to the cities were relatively safe, since both cities had people like Hunters - or in Shenzhen's case, students (teachers would lead the older kids at our school into the Avast Mountains to train) - patrolling it and killing off some monsters or beasts from time to time.
But...that still left nearly a hundred kilometers worth of dangerous territory.
But this was the shortest route...