Compared to Xu Xiaoshou, they were two extremes!
Mu Zixi could even imagine that if Xu Xiaoshou had entered the first three Halls, not even a plaque would have been left behind.
The golden edges of the words engraved on the plaque would have been dug out by him to find the 'significance' - Why was it engraved in gold? Did it have any special meaning? Would he be able to get rewards and treasures if he broke this mechanism?
Her mind was filled with thoughts, but Mu Zixi did not dare to stop her actions.
This 'Formation-breaking key' came from Jiang Buyi. It was of a very high quality and might even be a holy product.
In short, he could even break the Spiritual Array seals of the various great Halls in the ancient First Hall of Sins, but he would need to inject a lot of spiritual source.
Fortunately, Mu Zixi didn't lack spiritual source.