C421 Means of communication

Gu Lvhan seemed to have an idea. If he had, then it would be for the best.

"Oh, if you have an idea, then it's really too good. Tell us, what do we need to do to get inside? We'll listen to you." Pu Ling smiled and looked towards Gu Lvhan.

"No matter what formation it is, it all has its own fatal flaws. There's no need to explain any further." As Gu Lvhan spoke