Gao Yang was extremely frustrated because he discovered that the enemy had been trying to capture the members of Friend of Nature alive, which was not good news, at least not for him.
Capturing enemies alive was much harder than killing them, Gao Yang now firmly believed that their numbers were much larger than the intelligence had indicated, much larger. Otherwise, the Iron Madonna, with only ten people, couldn't possibly attempt to capture Huan's group alive. The simplest reason was that the Iron Madonna didn't even have enough manpower to guard and transport prisoners.
Whenever there was a battle, it never went according to plan. For instance, one might believe the enemy had a division of ten thousand men, only to find during the attack that the enemy's defensive force consisted of two reinforced divisions totaling thirty thousand men.