C743 He Had Sacrificed His Life for the Sake of Humanity

Su Yeh reached out his hand and touched the formation of the spiritual garden. He couldn't help but frown slightly.

"This formation is actually a chain formation that can isolate the heaven and earth. Breaking it isn't easy, and entering it without making a sound is even more difficult."

Su Yeh's understanding of formations was not something that ordinary cultivators could compare with