Is there a misunderstanding?

With such medical expertise, would Feng Jiu be an ordinary person? He knew he was special, but he didn't think he would do something like this here. Why?

If he wanted to kill the peak master, why did he wait so long to do it? What was his purpose in doing this?

Now that he was surrounded inside the sect proper, how would he manage to get away with his strength?

The distant sound of battle pulled his thoughts back to the present. As he watched the besieged Feng Jiu, he found himself unable to save him at the moment, let alone help him.

In the presence of so many people at the sect, if he protected Feng Jiu, it's very likely that he would be killed as an accomplice. He wouldn't be able to make any difference at all, so, what on earth must he do? Was it possible to save him?