C73 Masked Man in Black
Second, before the opening day, Wu Molee told us about everyone's background, but Zhang Weiwei's background wasn't mentioned. Either Zhang Weiwei didn't have any background, or Wu Molee didn't know about Zhang Weiwei's background, but if Zhang Weiwei didn't have any background, she wouldn't be alive until now as a girl.
Third, I've asked around