I have no choice before, but now I want to be the one who returns. A Chinese internet meme originated from a scene in 2002 Hong Kong crime thriller film Infernal Affairs. In the film, Chan Wing-yan, a police officer, goes undercover into an organized crime triad; only his direct superior, Superintendent Wong, is aware of his mission and true identity. Around the same time, Lau Kin-ming, a triad member, infiltrates the Hong Kong Police Force on the orders of a powerful gang boss, Hon Sam. Each mole has been planted by the rival organisation to gain an advantage over the other side. Over the course of ten years, Chan experiences great stress from his undercover work while Lau quickly rises through the ranks in the police department. Using Morse code, Chan is able to relay data back to the police. However, Lau alerts Hon, giving him enough time to order his minions to dispose of the evidence. After the incident, both Wong and Hon are tasked with finding the moles in their respective organization. Wong intends to pull Chan out of undercover work for fear of his safety. However, Wong is caught by Hon's men and is killed when he is thrown off a building, having refused to reveal Chan despite a beating from the gangsters. While investigating this incident, Lau finds out Chan's real identity via Wong's computer terminal and deletes Chan's file from police database. He then retrieves Wong's cell phone and contacts Chan; both of them agree to foil a drug deal by Hon. The plan succeeds and many of Hon's men are arrested, while Lau betrays Hon and murders him. Everything seems to have returned to normal. However, back at police headquarters, Chan discovers that Lau was the mole and leaves immediately. Chan and Lau meet on the same rooftop where Wong was killed earlier. Chan disarms Lau and holds a pistol to his head as a rebuke to Lau's plea for forgiveness and request to remain a cop. Lau: Give me a chance. Chan: How? Lau: I have no choice before, but now I want to be the one who returns. Chan: Alright, go to the court, and see whether you have the chance to be a good-guy. Lau: Which is equal to letting me die. Chan: Sorry, but I'm a cop. (Another famous meme) Lau: Who knows?