When Fang Xin heard this, delight surged through him. "Brother, you really have such a powerful formation? That's wonderful!"
From the sound of it, he could tell how formidable the Reversing Sun and Moon Heavenly Mechanism Formation was.
It was an extraordinarily deadly formation. Imagine a horde of Ghost Gods swooping in under cover of night, only for the formation to spring to life, Reversing Yin and Yang and the sun and moon, and turning night into broad daylight in an instant... How delightful that would be for the attackers.
Tang Changsheng said, "This formation needs Formation Banners and a Formation Eye, but I'll have to perform Ritual Refinement on them myself..."
Before he could finish, Fang Xin cried, "Tell me whatever materials you need, brother. We have no use for Mortal World wealth in the Netherworld, but we've still accumulated some. If it isn't enough, my Ghost Soldiers can go dig up graves. We'll gather everything you need!"
Tang Changsheng smiled. He had not brought it up on a whim; he knew the Reversing Sun and Moon Heavenly Mechanism Formation.
In fact, he had learned it only recently from the central Spirit Realm of the General's Temple's Mountain Gate Array.
It was part of the Nine-Dragon Heaven-Locking Heart Array, and one of the three formations that together made up the General's Temple's mountain gate defenses.
That was why, whenever the General's Temple faced a crisis, Yin Energy immediately surged, a Ghost Domain appeared, and ghostly figures emerged even in broad daylight...
Granted, the formation on Yin and Yang Mountain was already mostly ruined. It could only manifest Ghost Creatures below the level of a Grudge Ghost.
Worse, it was uncontrollable. The slightest disturbance—even thunder or rain—could set it off...
Tang Changsheng had been pondering how to repair it lately,