I observed that many of the underground stations also similar wf dark tiles... it looks more like the cleaners used corrosive cleaning agents which leaves the mark permanently. It probably happened before they open up the station.

As in leaking, if u mean the aircond then yes, it's always too cold in the station...but generally Stations and trains r all in good condition. Don't understand why u all complain.

This post has been edited by thecaterpillar: Oct 31 2017, 06:47 PM