X-Men: What Happened To Everyone Who Became The Phoenix?
14. Fongji Wu
When Yu-Ti started having weird dreams about a girl with blood red hair who would become the new Iron Fist, he knew he had to find her.
Afterwards he had he taken her to his temple and trained her, but when her Phoenix power finally manifested itself he allowed her to leave and she headed off into space, never to be heard from again.