Gù / shì / zhōng / de / liù / shàn / mén / fù / zé / diào / chá / zhè / qǐ / fā / shēng / zài / jīng / chéng / de / àn / jiàn故事中的六扇门负责调查这起发生在京城的案件。In the story, the Six Doors is responsible for investigating the case in the capital.