The array formations on the second floor were clearly much more numerous. Although there were only three bookshelves, they were densely packed with various types of array manuals.
Many of them were advanced versions or branching derivative versions of the arrays below.
For example, the simple illusion array on the first floor had three advanced branches here: the small illusion array, the demonic sound illusion array, and the imitative sound illusion array.
There was also an upgraded version of the mist formation from the first floor: the spiritual mist formation and the cold mist formation.
What Lin Xin was most concerned about was the advanced version of the small solar yang formation.
Sure enough, he found this advanced version on the second bookshelf.
The 'Crimson Flame Formation,' 'Solar Yang Formation,' 'Thunder Fire Formation,' 'Wood-Fire Formation,' 'Rock Fire Formation,' 'Mundane Fire Formation,' 'Yin Fire Formation,' and so on spread out in a long row of manuals.
