There were lush trees as well as weedy and complicated terrain in the final battle zone. The terrain here was so complicated that there was not even a path.

When the soldiers walked in this kind of place, they would consume more energy than they did when participating in a marathon. Because of the altitude, the air pressure here was also very low. In addition, there was no sunlight all year round and it was also very humid. Some animals that had been dead for a long time could ...