```
Mike asked in great detail, and Yang Yi answered just as meticulously, so by the time Mike and Yang Yi returned to the living room, more than an hour had already passed.
Back in the living room, Mike went straight to Brian, who had been sitting there for over an hour, saying, "We need to talk."
Brian nodded, then he said in a deep voice, "What do you want to talk about?"
Mike gestured toward Yang Yi and said solemnly, "Let's start with the Grey-cloaked People."
Yang Yi was very concerned about the Grey-cloaked People; he wanted to know anything related to them, while Brian saw no need to understand them. However, after glancing at Yang Yi, Brian still nodded and said, "Then please begin."
"The Grey-cloaked People are a very mysterious organization, and also a very powerful one. Most importantly, none of us knows the purpose of their existence, nor the goals of the Grey-cloaked People. So, due to the unknown, they are mysterious, and due to the unknown, they are dangerous."
