The M Nation's commanders did it.
All they wanted was to provoke these mercenaries' resentment towards what Xu Cheng had done, and to make them feel that they had been seriously humiliated.
They shifted the problem on the national level into a problem of a confrontation between justice and the outlaws.
It was obvious that they couldn't just go back. If they returned with the man still free and wandering around, then they would lose their jobs. Now, they were redeeming their mistakes and trying to mitigate their wrong-doings. As long as they exterminated Xu Cheng's area, then they would only need to face a punishment instead of losing their jobs when they return to the M Nation.
"Currently, the remains of our soldiers have been taken away, and their attitudes were quite arrogant."
The commander played the footage of the video call with Xu Cheng.