C1687 The Spoils of War

Ye Hongtian watched as Ji Shaoyan disappeared from his field of vision, but he didn't follow him. Instead, he walked to the side of the wall, drew an array pattern on a piece of paper, and pasted it on the wall.

When the paper was stuck on the wall, it would immediately burn. When the paper was burnt to ashes, there would be an additional array pattern on the wall