豹子概率统计简介：Liu Lei's house is on the fourth floor like Su Can's house. The corridor is much wider than that of Su Can's house. There are lights illuminating the corridor and alley, so there is no need to worry about accidents such as falling.
Liu Lei's house is on the fourth floor like Su Can's house. The corridor is much wider than that of Su Can's house. There are lights illuminating the corridor and alley, so there is no need to worry about accidents such as falling.
