Ardeth was much better than Zheng at leading a large number of people since he was the head of a tribe. That was not to say his leadership abilities were better but they each had their strengths. Zheng would be stronger leading a small group of less than twenty people in a fight.
Zheng was quite happy that Ardeth was willing to lead the workers. O’Connell and the others would take over ten days to arrive so he began practicing his Qi and blood energy. He realized his lack of strength during the battle with team devil. He was inferior to the clone in pure strength, mentality, willpower, and techniques.
The desire to survive wasn’t powerful enough on its own. He needed a stronger desire. A desire for victory, to protect the people important to him, to never lose them again!