They all sit down and start to eat their hamburgers.
Mouth full, Jack continues, "So Jie Ai was able to throw needles at me without being detected. I seriously was unable to see he even moving his arm at all. He's like a magician, just conjures up needles on demand!"
"Hmm," Bob thinks on this, "You know, I am not super surprised about this... needle throwing skill. I mean, I am surprised that Jie Ai knows how to do it, but the skill itself is not unheard of."
"Oh?" Jack is curious.
"Yeah. It is a type of Chinese martial art. It usually takes years and years of practice to be good at it. Actually, from my understanding, those who are good at it must also have 'chi' to go along with this skill. I guess Jie Ai must have learned it and has practiced it long enough to do that."
Jack is impressed that Bob is so knowledgeable about Chinese Kung Fu. But, he is not shocked. Bob is always quite intelligent in many ways.