Shanghai is the largest city of the People's Republic of China by population, and the largest city proper by population in the world.
In 2007, Robert Queen and Frank Chen planned to travel to Shanghai, where they would use the latter's contacts to buy up the rest of the real estate in The Glades in an effort to prevent The Undertaking.
Gan Jaw-Long, the corrupt police sergeant of Shanghai, threatened the citizens of his district for years into paying him "protection" money.
In 2013, Oliver Queen traveled to Shanghai to stop drug trafficker Shen Lei from peddling drugs into Starling City. Afterwards, at the behest of one of Gan's victims, Oliver tracked down and killed the corrupt sergeant, freeing the city from his tyranny.