Of course, the warning from the formations only means they were somehow triggered.
It was not necessarily because there was an intruder who sneaked in and triggered the formations.
There were many factors that could trigger the formations, such as a malfunction, accidentally triggered by other factors such as bugs, guards, and so on.
Anyway, Master Yu did not want anything untoward to happen to the treasured sword he had just obtained.
If he had not been forced to join the war against the Sea Beast Tide with all the other Region Heads, he would have already stayed in the Jade Tower until his plan was completed.
While Master Yu's mind was occupied with checking the situation of the treasured sword he had obtained, Tang Li Xue was busily thinking of a way to buy more time for her perfect copy.
