Ji Fengyan, while seated on the ancient dragon's back, stroked Bai Ze's hair as she enjoyed the breeze as it blew at her long hair. She closed her eyes comfortably.

It has been such a long time since she had had such an unrestrained battle.

At this thought, Ji Fengyan suddenly sat up and secretly took out a pile of burnt bones from her sleeves.

Bai Ze tilted its head as it looked at those bones. It sniffed curiously but flinched at the weird smell.

Ji Fengyan looked at Bai Ze's look of despise and could not help but laugh softly.

These were the demons' bones that she had picked up from the ground while no one was noticing. There were some high grade demons' bones. Seeing the pile of demon bones, Ji Fengyan's eyes shone brightly as she rubbed her palms together excitedly.

"Who would have thought that not only was the demon aura not harmful, it can also replenish my vital energy. Haha… I have really struck my lottery this time."

Thinking about the benefits of absorbing the energy from the demon bones from the underground palace, Ji Fengyan's heart was burning with enthusiasm.

Bai Ze silently watched its crazy owner and lay well-behaved at the side.

Ji Fengyan immediately took out a piece of demon bones. She followed the steps that she had taken in the underground palace and waited for her inner core to refine the bones.

However…

After waiting for some time, the bone that Ji Fengyan was holding on with her fingertips did not change. There was still demon aura around it but there was no sign of it entering her body…

"…" Ji Fengyan blinked. "Forget it, the demon aura of the low grade demons may be too weak, maybe I should start with the high grade ones first."

As she said that, she threw away the low grade demon bone that she could not refine. Then, she picked up a palm-sized big high grade demon bone and concentrated on refining her vital energy.

Subsequently…

"What the heck! What is going on?!" Ji Fengyan had stared so hard that her eyes were already itching, yet there was still no sign of the high grade demon bones being refined.

She did not believe in her misfortune and tried all the demon bones. However, the outcome was disappointing…

None of the demon bones could be refined and they remained exactly the same as their original look. What had happened in the underground palace did not occur again?

With greater expectations come greater disappointment—Ji Fengyan had almost puked blood in exasperation!

This differed completely from what she had expected!

The demon bones before her completely could not be absorbed by her inner core. Even the demon aura around the bones could not enter her body.

After many attempts, Ji Fengyan completely gave up.

She had originally intended on using the demon bones to replenish her inner core, but this hope was dashed. Ji Fengyan felt very disheartened.

She swept down the demon bones from the ancient dragon's back miserably and sighed heavily. Suddenly…

A black feather drifted before her eyes slowly from her sleeves along with her sweeping action.

That was a black feather that was so dark that it was glowing. Even though it was pure black, it was extremely beautiful. Ji Fengyan picked up the black feather and looked at it. She did not remember seeing such a beautiful black feather when she was fighting the demon clan this time.

But when Ji Fengyan took out the black feather, she suddenly felt a strong and pure strength emitting from the feather.

"This… whose feather is this?" Ji Fengyan looked at the energy emitting from the black feather in surprise. This energy was not the same as a demon's aura. It was something she had never seen before and it was so strong that it made people tremble.