Compatible cores.

" What does that even mean? " Wei Wuxian stared at the Lan elder curiously while the Lan Xichen passed a string of spiritual energy into his palm.

Apparently, the mysterious energy that has been claimed to raid Wei Wuxian's core and cause an ambush, has disappeared without leaving a trace. But Lan Xichen was insistent in making a deeper scrutiny, and so he checked Wei Wuxian's meridians from time to time.

" Currently, you are unsullied from any sort of negative energy Wei Gongzi." Lan Xichen exclaimed with a warm smile.

" Thank you Lan Gongzi. Your spiritual energy feels really soothing." Not as good as his. He didn't utter the unholy statement that danced around his mind.

" A-Xian, we are immensely relieved that you have healed in no time. Thanks to the proficient Lan medics." Jiang Fengmian smiled at him warmly.

" Wei Ying. You must know that Wangji would never harm you intentionally?" Lan Qiren sounded oddly credence. Wei Wuxian frowned.

" Master Lan. Even though Lan Zhan is a saint, we can't ignore precariousness of a young heart right? Who knows he might be harbouring murderous feelings against me without your knowledge. After all i turned his peaceful life upside down." Wei Wuxian blathered puckishly.

Lan Qiren frowned with displeasure even though the jest was conspicuous. Something was iring him - perhaps a blatant ignorance embedded within the depth of the unruly disciples eyes that was igniting a cliff of exasperation within him.

" Wei Ying, Wangji... Nevermind. Ask him yourself what he thinks of you." With a sigh, Lan Qiren resumed sipping his tea.

" Wei Gongzi. The reason Wangji attacked you is not because he hates you, but a grim reason lies within." Lan Xichen's unusually sombre tone drew Wei Wuxian's attention immediately.

" A grim reason? Lan Gongzi i am of course not blaming Lan Zhan. But, it is possible that there was imbalance in the arrangements of the spiritual powers used in the bed of spirits? "

The elders glanced at each other briefly. Wei Wuxian's heart skipped a beat as apprehension took over him.

" A-Xian, we found Qishan Wen incantation on the bed you were thrown onto." It was Madam Yu'a grave voice that slipped hollowly like a cold shiver.

Wei Wuxian stilled.

" What! That means...a Wen has snuck into Cloud Recess and is deliberately trying to cause disharmony in the spiritual balance! " The realisation petrified him to the core.

" We are trying to track down the culprit. I believe he is residing among us. Camouflaged in Lan disciple robes." Wei Wuxian nodded gravely. " And the culprit is associated with someone who is well acquainted with cloud recess." He added thoughtfully.

" What makes you think so Wei Gongzi?" Lan Xichen frowned.

" Lan Gongzi, the array of the spiritual power of the Bed of spirits are not that simple are they? It is an intricately balanced labyrinth. And over that, it is well protected and shielded. So who else would be able to decipher a way closest to destroying the barrier if not someone intimate with Cloud Recess and Gusu's method of cultivation? "

Lan Xichen considered the posit and felt deeply distressed; lost in a brief moment of ponder.

" Could it be someone from among the Lans?" Lan Qiren sounded vaguely unconvinced, visibly swelling with grave distress at the mere assumption.

" That's not impossible Qiren. We have seen those Wens turn the youths against their own sects. For now, it will be better we keep this disclosed and as coveted as possible. We cannot alert the enemies." Lan Qiren agreed with Jiang Fengmian.

"All we can do now is silently catch the felon and extract information from him. The person must be a minion of the Wens, working in exchange for benefaction." Lan Xichen decided.

"Wei Wuxian, you have talked with Wangji right?" Lan Qiren asked and frowned, for the boy acquired an expression akin to scrunching out of displeasure.

But Wei Wuxian smoothed out his face and nodded solemnly.

"Yes we talked." And I don't want to think about it.

Something didn't sit well with Lan Xichen and he scrutinize Wei Wuxian's face with a frown. " I guess there is something more to add, am I right Wuxian? Did something happen between you two?"

The younger sighed. "Lan Gongzi, why don't you ask your brother yourself? Ask the fuddy duddy what he did to me."

It sounded rather improper to the holy Lan ears even though nothing substantially obscenities was involved in the statement. Lan Qiren's lips turned upside down. " What could my nephew possibly do to you Wei Ying? Why are you talking in this way?" Wei Wuxian was startled from the from the uncharacteristic tone of the Lan.

" He has been a... " Jerk. But he decided not to finish the sentence and gripped his forehead with two long, slim fingers. " I am having a headache Laoshi, A-die, Lan Gongzi. Can i take rest for sometime?" The elders acquiesced.

If Wei Wuxian figured something odd in the behavior of the three elders, he could put finger on it. Over that a sense of hollowness and longing have been eating him out ever since... Well... The jerk left him. Petulantly, Wei Wuxian fell on the bed to enter a world of peace for a moment.

Right after tough arrangements were made to keep eye on each and every disciple and Lan Clan members. They solidified their security system. Every person residing in the Cloud Recess was secretly kept under supervision through the special token offered under the name of energy replenisher and protector from evil spirits.

The matter of compatible cores was still left to explore.