Question: Around how many members does the triad group, for which Michael Chan admitted being the No. 2, have?

full_context: Document 1: Four big families of Hong Kong: The Four big families of Hong Kong () are an initial group of Chinese families. Today, the Big Four families and their descendants are Fortune Global 500 companies with multinational corporations and listings from the London Stock Exchange to the New York Stock Exchange. Along with their European mostly British rivals in colonial Hong Kong, they were responsible for much of the foundations of the territory including its economy, finance, and trade, whilst the British government provided the first codified legal system which until then and in most of China today, was lacking. The four big families begin with the Chinese surname Li, Ho, Hui and Lo. Respectively the head of four families are Li Sek-peng (), Robert Ho (), Hui Oi-chow () and Lo Cheung-shiu (). Today the two families most recognizable by regular Hong Kong citizens are the Li and Ho group descendants.
Document 2: Youth in Hong Kong: Youth in Hong Kong, according to the University of Hong Kong Statistical Profile, includes citizens of the Chinese territory of Hong Kong aged 15–24 years. As of 2011, youth in Hong Kong ages 15–24 made up 12.4% of Hong Kong's overall population at 875,200 people. Hong Kong is a hybrid culture, influenced by China and Britain, but overall by its international economic ties, which plays a role in shaping the lives of the youth in Hong Kong. The youth in Hong Kong are unique in the fact that many are living Transnationalist identities. The demographics are not just ethnically Chinese youth in Hong Kong, but also youth that are ethnically White, Indonesian, Filipino, which can be seen in Demographics of Hong Kong, and that creates a unique society. "Although with a dominant Chinese population, Hong Kong is an international city and is a mix of East and West rich in cultures, history, and religions." The disparity between the rich and poor within Hong Kong has been growing wider.
Document 3: 14K Triad: The 14K (十四K) is a triad group based in Hong Kong but active internationally. It is the second largest Triad group in the world with around 25,000 members split into thirty subgroups. They are the main rival of the Sun Yee On, which is the largest Triad.
Document 4: Ping On: The Ping On triad was a Boston-based criminal organization. The organization rose to power in the 1970s and continued to operate throughout the 1980s, 1990s and early 2000s. The Ping On was founded by Stephen "Sky Dragon" Tse who had heavy ties to the infamous 14K Triad in Hong Kong.
Document 5: Jackie Chan: Chan Kong-sang, SBS, MBE, PMW, (陳港生 ; born 7 April 1954), known professionally as Jackie Chan, is a Hong Kong martial artist, actor, film director, producer, stuntman, and singer. In his movies, he is known for his acrobatic fighting style, comic timing, use of improvised weapons, and innovative stunts, which he typically performs himself. He has trained in Kung Fu and Hapkido. He has been acting since the 1960s and has appeared in over 150 films.
Document 6: Wo Hop To: Wo Hop To, or WHT (和合圖) is a Triad group based in Wanchai, Hong Kong. The name translates to "Harmoniously United Association" or "Harmonious Union Plan" and is thought to have been founded in 1908 in Sai Ying Pun as a secret political organisation in opposition to the Qing dynasty. They are one of the Four Major Gangs (四大黑幫) of Hong Kong, the others being Wo Shing Wo, 14K and Sun Yee On.
Document 7: Chan Ho-nam: Chan Ho-Nam (陳浩南/Andy Chan) is the protagonist of the Hong Kong Manhua series "古惑仔Teddyboy" which later was adapted into a film series titled "Young and Dangerous". He was born in Macau on the 5th of December year 1968. He is a part of the fictional Triad Gang "Hung Hing". He is known as a Loyal, Powerful and Righteous member. He was recruited at the age of 14 by "Gangster B" alongside his buddies Chicken, Dai Tin Yee, Pou Pei and Chou Pan. Outside of the Comics, Chan-Ho Nam is among one of the few that is considered a popular Manhua hero. Ekin Cheng played as Chan Ho-Nam in the movie series which he became popular for while Nicholas Tse at the age of 16 portrayed as a Younger version of Ho-Nam in the prequel. Originally Andy Lau was supposed to play Chan-Ho Nam but later the role was given to Ekin Cheng. In the films Ho-Nam's famous Dragon Tattoo is placed on his shoulder but originally in the comics it's placed on his back.
Document 8: Flying Dragons (gang): The Flying Dragons also known as FDS () are a well known Chinese American street gang affiliated with the Hip Sing Tong; they are active in New York City's Chinatown, and have a presence in Hong Kong, Canada and Australia. The gang moved heavily into heroin trafficking after the Italian-American Mafia lost the trade as a result of the Pizza Connection prosecutions in the mid-1980s. The Flying Dragons are believed to have been started during the late 1970s to early 1980s.
Document 9: Jason Chan Chi-san: Jason Chan (born 12 December 1977) is a Hong Kong actor and television presenter. He started off at TVB hosting a variety of English Pearl lifestyle shows, which required the use of his proficiency in various languages: English, Cantonese, Mandarin, French, and Latin.
Document 10: Michael Chan (actor): Michael Chan Wai-man (; born 10 July 1946) is a Hong Kong actor. A Hakka of Wuhua ancestry born in New Territories, Chan was well known for various triad roles, when in actuality he had been involved with triads in real life. In a media interview, he admitted to have been the No. 2 the 14K Triad that dominated vice in Tsim Sha Tsui before the handover of Hong Kong. Having worked as a police officer in the prison system, he came into contact with many underworld figures and joined the Triads. Chan was expelled from the police force as a result of his links.
Document 11: Lui Lok: Lui Lok (born May 16, 1920, died May 13, 2010)('), also named Lui Mo Lok ('), was a former Hong Kong Detective Staff Sergeant I, or chief detective Chinese. He was best known for his corruption during the 1960s to 1970s in the British Hong Kong period, and being wanted by ICAC for a long time. He was claimed as 'The Five-Hundred-Million-Dollar Inspector' For Hong Kong Citizens.
Document 12: 2010 in organized crime: Around the world are countless groupings of individuals who deal exclusively or through a mix of legitimate and illegal activities. These Organized crime groups or criminal organizations are a transnational grouping of highly centralized enterprises run by criminals for the purpose of engaging in illegal activity, most commonly for the purpose of generating a monetary profit. The Omnibus Crime Control and Safe Streets Act of 1968 (federal statute - Public Law 09-351) states, "Organized crime means the unlawful activities of members of a highly organized, disciplined association..." They are called a number of different names including: the Mafia (US, Italy), Yakuza (Japan), Chinese Triads, the Irish Mob, the Neapolitan Camorra, the Calabrian 'Ndrangheta, the Indian Mafia, the Unione Corse, Serbian Mafia, and the Bulgarian mafia.
Document 13: Nick Cheung: Nick Cheung Ka-fai (; born 2 December 1964) is a Hong Kong actor. He is a former Royal Hong Kong Police officer for four years, but he left the job after his request to be transferred to the criminal investigation department was turned down. He then worked for Danny Lee's film production company. His film debut is ""Thank you, Sir!"", as a student at the Royal Hong Kong Cadet School. From 1989 to 1994, he worked at the television station ATV World. Later, he left ATV and joined another station, TVB. He left TVB in 2004, and worked mainly on films. His fame was built on Wong Jing's comedy at first, but he has changed his acting style for more sombre roles since 2003. He was nominated for his first Hong Kong film award in 1999, and won his first award in 2009 for his role in "Beast Stalker". He has been nominated many times at the Hong Kong Film Awards and other Chinese film awards since then.
Document 14: Jaycee Chan: Joming Jaycee Chan (born 3 December 1982), better known as Jaycee Chan, is an American-born Hong Kong actor and singer. In 2004, he released his first Mandarin CD album in Hong Kong. He was based in Taiwan to continue his music career. He is the son of the Hong Kong martial artist and actor, Jackie Chan and his wife, Joan Lin. He sings and performs in Mandarin and Cantonese. He is currently on a hiatus from the entertainment industry after he was arrested and jailed for providing his apartment in Beijing for acquaintances to smoke marijuana in but he stated that he has a plan to make a comeback and to even direct a film.
Document 15: Hong Kong Recording Industry Alliance: Hong Kong Recording Industry Alliance Limited (HKRIA, ) is a not-for-profit copyright management organization, formed to handle copyright issues for recording companies regarding the broadcast, public performance and relevant usage of sound recordings (recorded music) and music videos in Hong Kong, Macau and other territories. The founding companies included the traditional internationally recognised Big Four Recording Companies (四大唱片公司) of EMI Group, Sony Music, Universal Music (環球) and Warner Music Group (華納). The group was established in October 2008. Later in December 2010, BMA Entertainment (博美) joined HKRIA, turning the Big Four into the Big Five. While BMA is
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