The loud laughter from them captured the attention of the cultivators from the Ever Devpuruing sect that was hiding close by and monitoring what was happening with Dean and the ladies.
With the effect of the array that was set up by Miss Elena to obstruct those who wanted to spy on them, they were yo seeing what was happening but were just monitoring the place.
Since it was a dead end, they knew that once Dean and the Ladies were done, they would come out disabling the array formation so they would be able to have a clue of what had happened.
If they can't know what fully happened there, at least they would be able to tell if something good happened by looking at the expression of the people after they disable the array.
So they were waiting for when Dean and the ladies would leave that spot, but to their surprise, they were not leaving but had been there for about thirty minutes.