This corpus was recorded from mobile device with 200 speakers in total of 200 hours. It is a business meeting dialogue senario covering finance, medical, healthcare, reseach，and Internet with each set includes 2-4 people.
This dataset was recorded in a quiet office/home environment, with the participation of 200 speakers, including 123 males and 77 females. All speakers who took part in the recording were professionally screened to ensure standardized pronunciation and clear articulation. The recorded text materials cover information such as news.
