The days passed in a flash as Rean and Roan planned the best approached for the infiltration. The reached the conclusion that it would be better to go through the front gate straight away. That's because, in theory, the side walls would be the place that most would want to use to enter.
With Rean's Light and Spiritual Sense Bending, together with Roan's silent approach, they should be able to pass by those Foundation Establishment disciples. They also reach an agreement that they would immediately enter the Soul Gem Realm the moment Rean felt a Spiritual Sense pass through his Spiritual Sense Bending.
One good thing about Rean's ability is that different from other low-level cultivators, he can tell if someone's Spiritual Sense touched his 'barrier.' He can't feel the Spiritual Sense of someone at a level much higher than his. Still, he can tell that those powerful Spiritual Senses passed through his Spiritual Sense Bending.