Vermillion Bird's Bloodline?

Having heard everything from the Eagle Beast Lin Wu now understood the situation better.

The Eagle beast was basically pissed off due to the appearance of the Olive Viper King as it had suddenly grown stronger while she herself had been stuck at the Adult Stage of the Nascent Soul realm for over a hundred years. 

Then a time came when she could not hold back anymore and she decided to kill all the beasts she could and consume them in hopes of increasing her chances of breaking through to the next stage.

During that, the bloodline of the Vermillion Bird awakened within her and allowed her to progress further. But she knew just that would not be enough for her and she would need more of the bloodline.

She had awakened barely a trace of it in her body, but that was still enough for her to sense that there was more of it somewhere west of the Millennium forest. And thus she left the forest to come to the Dread Coil Marsh.