Sometimes, old Jack would ponder, why were humans so fragile A single blade could kill them, yet they were capable of ruling the entire world.,But luckily, today's job was pretty easy. The knife was sharp and easily pierced the other person's neck, tearing through the neck muscles and reaching the windpipe. With a light flick, I cut open the entire airway...,"Hello, is this Mr. Jack I'm so sorry to bother you, but I wanted to confirm, have you... finished... "。