Mr. Gaven and his team's ambush site was not near the granary, nor was it in the Tesser Refugee Camp.
Instead, they positioned themselves in the forest on the mountainside near the Tesser Refugee Camp, backed by the mountain range.
This was done to accommodate Black Nanmu and Thornspike, whose enormous sizes were too conspicuous. If they were near the Tesser Refugee Camp, they would surely have raised the alarm of those cunning vampires.
After all, their visits to the refugee camp were not one or two instances; they wouldn't fail to remember the presence, or lack thereof, of large trees nearby.
For ordinary people, an ambush from seven to eight hundred meters away might seem too distant.
But for two towering Treants with long legs, this was a mere two to three hundred steps, especially downhill, where they could move even faster.