Chewing gum was causing serious maintenance problems in high-rise public housing flats, with vandals disposing of spent gum in mailboxes, inside keyholes and even on elevator buttons.
In reality, the "Tampines Grove" condominium, the show's main setting, is a real HDB Estate Prentice in Tampines.
Fajar station serves the residents of HDB flats located along the northern part of Bukit Panjang Ring Road.
Today, Holy Innocents' High School stands on an elevated ground in Hougang Central, surrounded by HDB flats and the shopping centre named Hougang Mall.
In July 2007 HDB-group fused with Serboucom from Enschede, the franchise organisation behind Multimate, Oxxo en Hout-drive.
This station is located near Rivervale Mall, some HDB flats and Rivervale Crest.
Teck Whye was picked as the name of the station as it is near Teck Whye Heights, which is a cluster of HDB flats forming part of Choa Chu Kang.