It was true that magician had to recite their magic skill. However, they only needed to say out the correct spells given by the system. There was no rule implying that the louder you shout, the stronger the skill… If this was the case, wouldn't musicians be the strongest magicians in this game?
Take Ming Du as an example, the volume at which he recited a spell was as loud as a mosquito's fart. He was nothing like Jade Beauty, who shouted her lungs out…
This [Dancing Ghost Vines] had no preposition for her to read out. Even so, this skill was like the trajectory of an archer's arrow. It was a very long process.
From the emerging of the vines to forming a prison, this whole process would take at least two seconds. Two seconds were definitely enough for experts like the members of the Quan Zhen Sect to break free. If this wasn't their first time witnessing such a skill, it would be impossible to trap so many of them so easily.