 A journey shorter than 6 km costs ¥2; ¥1 is charged for every 7 km after 6 km, every 8 km after 13 km, and every 9 km after 21 km.The system is free of charge for elderly citizens in Zhengzhou with ages above 60 during non-peak hours and on public holidays.Children under the height of 130 cm may ride for free when accompanied by an adult.