"I have to avenge my brother!" Zhou Yujun's eyes were bloodshot as he stared fixedly at the kidnapper on the ground, with the intent to kill unabashedly present in his gaze.
"Have you forgotten who you are?" Ji Shubai, while dealing with his own adversary, reminded him. "There are many ways to seek revenge, not this kind where you also throw yourself into the pit." Unless absolutely necessary, they could not kill someone who was already unable to resist, otherwise.
As a soldier, the most taboo act is to kill out of anger, no matter the reason.
In future missions, if you lose your rationale every time a comrade has an accident, that's utterly unacceptable. Even if your capabilities are strong, you would be dismissed by your superiors.
What's most needed during a mission is composure. If you lose that composure, in the end, the only ones you'll harm are your own comrades.
