Jiang Chen's secret was a small gain for Long Yan during this time, but it had nothing to do with Long Yan personally. Even if those so-called righteous cultivators stepped into the Corpse Vein, there was no guarantee they could take Jiang Chen's life.
As for the "hush money" given to Long Yan, it was personally delivered to the Yanmen Commerce Association by a young Taoist in appearance, as a reminder from Jiang Chen that he knew exactly who Long Yan was and that there was no escape from him.
However, Long Yan was well aware that once Jiang Chen emerged, he would definitely target him first. Nevertheless, when soldiers come, they are blocked by generals; at worst, he could retreat into the Eastern Ancient Clan and lay low for a while. But for now, Long Yan's priority was to bring Lingxi back.