Immortal Bone?

Feng Xiyun did not know how to repay her teacher's kindness. Therefore, she could only steel herself and not let her teacher down.

She strengthened her will and began to focus on cultivating with Ye Xuan. Soon, she realized that the complete version of the Heaven Burning Flames that her teacher was imparting to her was much stronger than the original one. 

If she could really master the completed version, she would be able to compete with those peerless geniuses from the other continents.

"Pay attention, we're starting!" 

Hearing her teacher's instructions, Feng Xiyun immediately focused herself and circulated her spiritual power, following closely behind the spiritual power that Ye Xuan was transmitting through her body, while memorizing the circulation route.