After Zen Master Baimei hung up the call, I asked, “Zen Master Baimei, why do we need to use dark clouds to cover the moon?” 

“It is the first solution, but I’m not sure if it'll work.” Zen Master Baimei sighed. “Everybody knows that in ancient China, the sun was the source of Yang energy and the moon of Yin energy. During the Ghost Festival, the moon’s Yin energy is at its strongest. Tonight, the moonlight will awaken a lot of wandering ghosts.” 

I understood what Zen Master Baimei meant. “Ah... Are you saying that Zhao Kuo wants to use the moonlight to revive the souls of his army?” 

“Merciful Buddha, exactly.” Zen Master Baimei continued, “Zhao Kuo and his four hundred...