Yun Xi's training was similar to the trials she'd gone through with Jin Lei in the mountains, except the training here was far tougher. She didn't dare to be negligent or careless. Heat exhaustion wasn't the only big deal here. A bigger danger was fainting without anyone noticing, which could lead to a life-threatening situation.
Although everyone was given wireless radio-wave intercoms, they couldn't use them unless they absolutely needed to.
During the excruciatingly long hours, the extreme heat nearly extracted all of the water from her body. She didn't even dare to move when sweat dripped into her eyes. Once the concealment started, any minute movement could expose her to the enemy.
With Yan Shuo's strict standards, he would definitely make her start all over again, in which case all of her previous efforts would go to waste.