Salakau (Chinese: 三六九; Pe̍h-ōe-jī: Saⁿ-la̍k-káu), which means 369 in Hokkien, also known as "Sah Lak Kau", is a street gang or secret society based in Singapore. The numbers 3, 6 and 9 add up to 18, which was the name of an older gang; the number signified the 18 arhats (principal disciples) of Shaolin Monastery. As one of the oldest and most prominent gangs in the country, they are known to take part in many illicit activities such as narcotics, extortion, prostitution and white-collar crime — and many of their members have been in and out of prison for violent attacks and rioting. They have a renowned gang chant sung in Hokkien that is usually accompanied by techno beats, particularly the song "Million Tears".[1] It was reproduced for Royston Tan's teenage gangster flick 15, albeit with direct references to the gang edited out.[2]