C302 Meditation on Formations

Qin Yuan stared blankly at the secret manual of "Cold Light Array" in Zhan Ling's hands, not knowing what to say.

This < Icy Light Array > was the only secret manual for joint offensive formations in the academy. No one had exchanged this book for an unknown number of years. Who knew that Zhan LingTian would actually exchange it for it?

"Why did you exchange this?" Qin Yuan asked curiously