今年71岁的贺子英和老伴袁福庆住在南京雨花新村一村9幢301室。该小区由“南京大开发”承建。由于地面较高,承建方决定修建自上而下的台阶,每级台阶高度均为9厘米,但自上而下第4段的最后一级第59级台阶突然变成22厘米高。据两位老人反映,今年5月19日晚7时左右,贺子英老人独自一人下台阶时,在第59级台阶一脚踩空跌倒,躺在地 He Ziying, 71, and his wife, Yuan Fuqing, live in Room 301, Block 9, Village One, Nanjing, Nanjing. The district by the “Nanjing Development” contractor. Due to the high ground, the contractor decided to build a top-down staircase with a height of 9 cm at each level, but the 59th-level staircase at the last level from the top to bottom in paragraph 4 suddenly became 22 cm high. According to the two old people, at about 7 pm on the evening of May 19 this year, when He Ziying’s elder went down the stairs alone, he dropped his foot on the 59th-level stairway and lay on the ground