At this moment, Jie Li Khan felt precisely that way.
His intelligence system had clearly been crushed by Lord Qin, who understood the Turkic way of thinking well, knew the conflict between Jie Li Khan and Tulikhan, yet Jie Li Khan was completely ignorant of the current low morale within the Liang Army, and the conflict between Lord Qin and Prince Qi.
Thus, faced with the false show of strength staged by Lord Qin, he admitted defeat completely.
Firstly, he claimed, "I led over a hundred thousand men braving the rain with no other intention but to reconfirm the previous alliance with you, Lord Qin," and then he retraced his steps with his Cavalry down from Wulong Slope, retiring to a camp further away.
Just like that, Lord Qin had achieved his goal of subduing the enemy without fighting.
Given the circumstances at the time, it was impossible to truly engage in battle or show weakness to the enemy; there wasn't a better solution to be found.