Yao of the Little Immortal.

"The hidden clan's respected master, He Wan, launched a surprise attack on the heavenly court, and the divine being Nan Ze confronted him. To protect Nan Ze, the minor immortal Yu Zhi Yao sacrificed herself to save him, and at the moment of being consumed by flames with He Wan, she unexpectedly reborn. Due to a twist of fate, Yu Zhi Yao was reborn into He Wan's body. After her rebirth, He Wan's hidden power was greatly diminished, and the hidden guards of the West Sea, Ting Zhao, came to help Master He Wan restore her hidden power. From then on, Zhi Yao was forced to embark on the path of a dual-faced female master, pretending to be dignified in front of others while being charming and lovely in front of the ruler."