C424 Formations

Just as Chen Yu sat down, he saw Old Bai take nearly a hundred books and placing them in front of him.

"Introduction to Formations", "Elementary Interpretation of Array Daos", "Composition of Array Formations", "Analysis of 30 Basic Array Formations" …

Looking at the more than a hundred books in front of him, Chen Yu was stunned for a moment.

"Elder Bai, you …" Chen Yu asked