C2886 Falling Stars

Cheng Fei looked at Silver Wing for three days. Six hours before the challenge, Niu Er gave him an address and left alone.

"Wait." Niu Er stood up from the rocking chair. Cheng Fei turned his head and gave a black plate from his storage space. "Take it."

"What is it used for?" Cheng Fei asked.

"I don't know, I think it's useful