" What are you waiting for?" He asked in a rather patient voice even though the stone was aiming straight at his heart. Vampires were said to be immortal but as long as they were attacked precisely at the correct spot like their heart where their skin was the most fragile or they could be poisoned by the venom of the werewolves.
But the venom of werewolves was hard to find which was why many people who wanted to kill the alphas would attack their fragile spot.
Yin Zhu deliberately raised the stone in her hand to attack the man at the spot where his heart was, she just wanted to scare him so that he will let her go and would not chase after her. In her head as long as she was to let the man know that she wasn't as easy to deal with as he thought she will be fine but she didn't think that the man was actually so fearless in front of the face of death.