Lima en 30 años construye 30 km de metro mientras Chengdu en China construye 500 km en 10 años

 

On Dec 18th, 2020, Chengdu Metro offcially opened Line 6, 8, 9, 17, 18 Phase 2, making this system the 4th largest in the world.From 0km to 500km only use 10 years.