First of all, it may be that the age gap between junior high school students and high school students is relatively small. After all, there is still an age gap between junior high school students and instructors, and they may feel that instructors are unreasonable and strict. But college students are different. Generally, instructors are in their twenties, so they are easy to get along with. Moreover, college students' minds are relatively mature, so they are more afraid of misunderstanding and understand their tutors.

Secondly, it may be that the military training in general universities is longer and the activities are more abundant, so they usually have more opportunities to get along with instructors and better understand the different side of instructors. For example, during our military training, there was a cultural performance. Usually, our instructors are trained in business, but they actually dance street dance very well! The audience was shocked at that time!

Secondly, in fact, soldiers have an indescribable charm in them. Sense of honor, tough style, etc. Many boys don't have it in their daily lives, so they may be more admired by girls and appreciated by boys.