China opened 12 subway lines in 9 cities in one month-中国一个月内在9个城市开通12条地铁线

Wuxi Metro Line 4 Nanning Metro Line 5 fully automatic operation Luoyang Metro Line 2 Wuhan Metro No. 5 Driverless No. 6 No. 16 Line 16 uses quantum encrypted communication technology Nanchang Metro Line 4 Foshan Metro Line 2 Shenzhen Metro Line 20 Driverless Tianjin Metro Line 4 Driverless Metro Line 6 Phase II Driverless Qingdao Metro Line 1