"There's much mystery here."
Yun Ziliang pointed at the mirrors covering the wall and said, "Hexagonal mirrors are the hardest to focus with. When it comes to blocking or suppressing evil, it's about using the angles of these mirrors to concentrate the incoming heavenly light onto a single point. This adjustment highly depends on one's skill.
For the usual Dragon Seeking Heavenly Masters, setting up ten mirrors is already the limit. To set up thousands, channeling the light onto the Blood Well, is indeed a feat of the Dragon Seeking Hall Master. I have no doubt about it. Though it's night now, if it were day and the sunlight was strong, this stone room would be as hot as a furnace."
"Without profound prowess, such an exquisite arrangement would be impossible."
