(181213) -- BEIJING, Dec. 13, 2018 (Xinhua) -- The left part of this combo photo taken in 1979 shows 28-year-old Li Fuying carrying her one-year-old son Zhang Kan with a bike in Jinan, east China's Shandong Province. The right part of the combo photo taken by Zhu Zheng on Nov. 6, 2018 shows 67-year-old Li Fuying taking the car of her son Zhang Kan in Jinan. The biggest change for Zhang's family is that they bought a car in 2009, more convenient for travelling than before. (Xinhua)