The Green Snake's Gratitude: Peerless Medical Immortal

Ye Qingqing, a green snake demon with a cold-blooded nature, knows how to repay kindness. Once saved by Fu Cheng'en, she vows to protect the Fu family for three years and marries their grandson, Fu Xinren. Three years later, the once-poor Fu family has risen to wealth, but Fu Xinren's heart has changed—he brings home a pregnant Li Wanrou, and the family humiliates Ye Qingqing in every way. Little do they know, the three-year pact has ended. Ye Qingqing snaps, transforms into a green snake, and begins to settle scores with her scumbag husband and his family.