Bloodline power mainly enhances physical strength.
However, there are also some special bloodline powers, like those of the Xuanwu Clan. Their bloodline power ensures they not only have a freakishly long lifespan but also possess a defensive power that could be called abnormal. This has resulted in the Xuanwu Clan being almost undying and indestructible, to the point that even the Immortal Emperor can do nothing about them, ultimately being forced to suppress them.
Fortunately, the Xuanwu Clan has a low reproductive ability; otherwise, after hundreds of millions of years, the Cultivation World might literally be overrun with turtles, with tortoises trampling everywhere.
Of course, the bloodline power of the Xuanwu Clan is enviable, but average cultivators wouldn't crave it, after all, no one wants to be called a turtle or tortoise.
But when Tang Yi felt the benefits brought by the bloodline power within his body, he couldn't help but feel envious.
