Generally speaking, the instructors in universities are basically from the militia organizations organized by themselves in the school. Usually, school activities, large and small, are inseparable from their maintenance.
The students I want to ask this question must be more or less because the instructors are too strict in military training. Let's take a look at the salary of the instructor. See if it's because of the high salary? In fact, there seem to be thousands of military training in about ten days, which sounds quite good. However, you may have overlooked a question, how can instructors be qualified to participate in training? In fact, before this, they will go through a training session for dozens of days, which will be carried out in the hot summer days!
It was the time of high temperature exposure. After everyone finished training, the weather was a little cooler and military training began. At this thought, the instructors are really tired!