Chen Haonan is the protagonist of a series of young people and dangerous people filmed in 1990s, played by Ekin Cheng. Ekin Cheng needed a tattoo when filming this movie, because Chen Haonan was the eldest brother and a porter in Causeway Bay, and Ekin Cheng drew a dragon with shoulders.

Causeway Bay (because of fluent Cantonese, some Hong Kong people will pronounce Causeway Bay as gong, which makes the three words sound like rising tone) is located on the west side of the north shore of the center of Hong Kong Island, which is the main business and entertainment place in Hong Kong.