The Octopus card is a rechargeable contactless stored value smart card used to transfer electronic payments in online or offline systems in Hong Kong. Originally launched in September 1997 to collect fares for the city's mass transit system, the Octopus card system has since grown into a widely used payment system for virtually all public transport in Hong Kong. It is also used for payment at convenience stores, supermarkets, fast-food restaurants, on-street parking meters, car parks, and other point-of-sale applications such as service stations and vending machines. The Octopus card has been internationally recognised, winning the Chairman's Award of the World Information Technology and Services Alliance's 2006 Global IT Excellence Award for being the world's leading complex automatic fare collection and contactless smartcard payment system, and for its innovative use of technologies. According to Octopus Cards Limited, operator of the Octopus card system, there are more than 14 million cards in circulation, twice the population of Hong Kong. The cards are used by 95 percent of the population of Hong Kong aged 16 to 65, generating over 10 million daily transactions worth a total of about HK$29 billion (US$3.7 billion) a year.

Andy Lau Tak-Wah (born 27 September 1961) is a Hong Kong Cantopop star, movie actor and producer. He has been one of Hong Kong's most commercially successful film actors since the 1990s.

The first lead role that made his initial popularity was the TVB series Hunting in 1982. In the same year, Andy acted in his first movie Once Upon a Rainbow. Later in 1983, his role as Yang Guo in the popular wuxia TV serial The Return of the Condor Heroes landed him his first leading role in a Shaw Brothers' film called On the Wrong Track.

Lau has since appeared in more than 100 films and 300 mini series with Hong Kong's TVB channel, and has a huge fan base throughout Asia with the success of both his onscreen performance and his musical career. Andy Lau is best known for his (often) recurring roles as a "Heroic Gangster."