What? You Say I Am a Collection?

"Chen Chen, don't be distracted!" "Okay... Okay! Team leader." "Look! This clock is a collectible - 0721 [When All Things Are Quiet]. Whenever its minute hand points to 12, there can be no sound around for that minute. There is no danger." "Oh, okay. I've written it down." "There is also this skull. It is a collectible - 1236 [Fear Projector], which can materialize the fear in the target's heart. Just be careful not to be scared to death and it will be fine." "…Okay." "Remember, don't get close to this sword. It's a collectible - 3540 [Sword that Cuts Off Life and Death]. It has serious side effects. Just remember, don't get close." "I understand! But I have a question." "Tell me about it." "Why did the Bureau of Supernatural Control extend an invitation to me to join here?" "Because... You are also a collector's item!"