article_snippet: The two cities driving most of the Chinese traffic to TubeCrush.net are Shanghia and Guangzhou - which have the fourth and sixth busiest metro systems in the world, respectively.
article_snippet: Both cities metro systems are in the top ten busiest networks in the world.
article_snippet: Guangzhou Metro had 2.28billion passengers in 2014, putting Guangzhou Metro sixth in the list, while Shanghai's 2.824billion passengers meant Guangzhou Metro was the fourth busiest globally, according to RailwayTechnology.com.
highlights_snippet: China is home to four out of ten of the busiest metro systems in the world .