question: Around how many members does the triad group, for which Michael Chan admitted being the No. 2, have?
answer: 25,000
context: Title: Brothers (2007 film)
  Passage: Brothers is a 2007 Hong Kong film.  The story follows the relationship between two brothers (Michael Miu and Eason Chan) who are part of a Hong Kong triad.  Produced by Andy Lau's Focus Films, "Brothers" is directed by Derek Chiu and written by Chan Kin-chung and Y.C. Kong.  The film mostly takes place in Hong Kong and Bangkok, Thailand.  The film is known as 兄弟之生死同盟 (pinyin: Xiōngdì zhī Shēngsǐ Tóngméng; "lit."  Brothers: The Living Alliance) in Mainland China.
  Title: Gangland Odyssey
  Passage: Gangland Odyssey is a 1990 Hong Kong action film directed by Michael Chan and starring Andy Lau, Alex Man and Chan.
  Title: Michael Chan (actor)
  Passage: 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.
  Title: 14K Triad
  Passage: 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.
citations: Michael Chan (actor) 14K Triad