The tall man spoke casually, not considering Gao Xuan's life as anything significant.
In his view, since they encountered Gao Xuan, he was destined to die.
Although there were other examiners in Night Demon City, the city was vast, and it wasn't likely they would easily run into other examiners.
On the other hand, even if other examiners saw this, they wouldn't stand up for Gao Xuan.
In Night Demon City, electronic devices were useless. Nobody could record evidence. Killing someone like Gao Xuan was just that, killing, without needing to provide any reasons.
Gao Xuan wasn't angry either; it would be strange if one of them didn't support Yu Ning and instead spoke for him.
There are people who stand for reason rather than personal ties, but not many. Moreover, in the eyes of the tall man, Yu Ning seeking revenge was reasonable.
As for why Gao Xuan killed Yu Hong'en, that wasn't important at all.
