That's pretty bitter. We are all suffering, not to mention the National Defense University. The main reasons are poor food, poor sleep and high housekeeping requirements. Dormitories are just like temples, and quilts have to be provided. Training is also very hard. At the beginning, it is enough to stand in the posture of a soldier. It's hard to stand for 40 minutes in a military posture, my God ~ ~

And a zipper or something. Anyway, just wait for eight layers of skin.