Technical Soldier Zhang Wei awkwardly stood up. "I... I don't know what happened. I thought I understood it the first two times, but when you explained it in detail the third time, Teacher, I realized it wasn't the same as what I thought."
Song He had a headache. After remaining silent for a while, he sighed. "Sit down! We've covered this part three times. In theory, you should understand it by now. If you still don't, your foundation is simply too weak. Everyone, work hard to make up for it after class!"
"Let's continue." He turned around and wrote on the blackboard.
After lecturing on the new material for a long while, he filled another entire blackboard.
"Raise your hand if you understood everything." Song He turned around.
Only one-fifth of the students raised their hands. The other four-fifths of the Technical Soldiers looked utterly bewildered, their expressions confused and pained. It was obvious they had listened seriously but simply couldn't understand.
Song He let out a long sigh. "I'll explain it again. Listen carefully!"
He patiently went over it point by point. This time, he not only gave the students time to think, but even called on students to ask questions, finding out what they didn't understand and explaining the key points again.
His lips were nearly worn raw, and he finished another explanation in a flustered, exhausted state.
"All right, raise your hand if you understand now!" Song He said.
One more person raised a hand than in the previous round. Nearly four-fifths of the Technical Soldiers still didn't dare raise their hands. Their expressions were unbearably ashamed, and they lowered their heads, afraid to meet the teacher's eyes.
Song He was numb with despair. He let out a long sigh and said earnestly:
"I know everyone has