C220

Ma Dong turned his head to look at the black screen.

"Xiao Ma, do you know anything about computers?" Tan Xiaojuan looked at Ma Dong and said, "Come, help me take a look. There's always trouble."

Ma Dong only knew a little bit about the situation, but with Tan Xiaojuan's question, he felt too embarrassed to say that he didn't understand, so he braced himself and went up