Because those who had spent the most time with Qin Yanqiu were the soldiers by her side; they would be heartbroken and weakened in spirit at the news of Qin Yanqiu's death. Most likely, it would be these people who would be affected.
Therefore, to be able to control their spirits, with the idea that if you could control one person, you would control one person, most of the soldiers following Qin Yanqiu were excluded. They were not all schemed against to be killed together.
Cheng Guang only thought for a while before he felt a headache coming on.
Although the matter was a bit convoluted, he still sorted it out in a short time.
Among all the high-ranking officers of the Northern Expedition Army, aside from Duke Zhen Guo, Cheng Shiyuan, the one most familiar with Qin Yanqiu was her father, Qin Beifeng.