The takeover of a body was something that was possible to do by basically any Nascent soul cultivator. Though there were conditions for it too. A nascent soul could forcefully take over a body temporarily, but unless it found a compatible body, it wouldn't be able to stay for long.
This could be mitigated by several treasures or by simply being stronger.
For example, the take-over attempt of a Dao Shell realm cultivator would be more powerful than that of a Nascent soul cultivator, and that of a Dao Treading realm cultivator would be even more powerful.
Thus, Jiao Fang managing to survive even now was no less than a miracle.
"Then… how are you still alive?" Lin Mu asked.
"A little luck, and a little willpower." Jiao Fang replied with a slight smile.
"Hmm… it's not just that simple though, is it?" Lin Mu said.
"You could say that." Jiao Fang spoke with a smile.
