Bai Xiaosheng added another sentence: "Of course, if it's against an irresistible enemy, Brother Pei does not need to make a move."
Although the two were allies, Bai Xiaosheng was aware of the formidable strength of his enemies. He could not, and did not wish for Pei Xuanjing to fight knowingly against an insurmountable adversary.
Bai Xiaosheng was not one to act on impulse. If they were truly facing an invincible enemy, Pei Xuanjing's intervention would only result in a futile sacrifice, which carried no meaning whatsoever.
At that point, he would willingly face death, and would absolutely not implicate Pei Xuanjing.
It was not because his relationship with Pei Xuanjing had reached the point where he was willing to sacrifice his life to save Pei. Instead, his rationality told him that the best outcome under such circumstances would be for Pei Xuanjing to survive.