Do we meet again? Or part ways?

ey Seven, look here, I'm opening it!" My brother reminded me.Bai Wuchang shook a chain out of his sleeve and laughed, "Open, are you still afraid my movements aren't fast enough"My brother held the co... is nothing here.There is no front door.The number 0 is neither positive nor negative.It is the only neutral number, representing the point of transition between positive and negative.If I'm not mista...