C38 He Figured It out so Quickly?

Lin Sihan felt chills running down her spine. She couldn't imagine how Gu Zetian, who was only 16 years old, had gone through all of this! And then there was the person who had saved him.

"After Big Brother returned, his entire person changed. He became even more silent and reserved, and no one knew what he was thinking. He began to crazily train himself