In short, Zhu Huqian decided to stay put in the Red Evil Array and stopped fighting, only dodging and parrying. It was clear that this wasn't his true ability; he could easily deal with mere Red Evil Divine Soldiers. Most likely, the Old Xuan Sect was wary of those Gold-devouring Worms, having exhausted their Thunder Talismans without a backup plan. Thus, he controlled the output rhythm, holding the situation, waiting for a solution on this side.
Chen Xuantian rolled his eyes, made up his mind, and fed Paozi a Nourishing Essence Pill and a Power Pill, simultaneously sending a message to everyone,
"This array must not be forcefully broken. The Five Elements Dao Turn is just a cover; underground lie eighty-one batches of Gold-devouring Worm eggs. Once out of control, they will burst forth all at once, transforming a hundred miles into a worm nest."
Zhu Huqian, "Whoa, damn…"
