投大小单双的平台简介：Su Can, who comes from the future, does know that Cheng Keshu is a member of the student union, but he has just met Cheng Keshu now, so it is impossible to know just by saying it. That would be too deliberate.
Su Can, who comes from the future, does know that Cheng Keshu is a member of the student union, but he has just met Cheng Keshu now, so it is impossible to know just by saying it. That would be too deliberate.
