The instructor had taught them for so long, so everyone picked up on some small habits. For instance, when the instructor was angry, he would go on stage and laugh coldly. The students in the line would know that a storm was coming and would prepare themselves.
If the instructor was happy, he would cough three times and say, "You look like soldiers today." The students would then know that they could leave the training in advance and return to their dormitories to rest.
If the instructor glanced back at at the students' faces from time to time while walking up ahead, he was deliberately delaying the announcement because he knew that there was good news. At first, he was able to scare the students, thinking that they would be punished again. After interacting with him for a long time, however, they figured it out.
After taking a few steps, the instructor stood still with his hands behind his back and coughed a few more times. Some students, like Xu Wen, couldn't help but smile.
