There is a novel in which the woman is called Doctor Butterfly and the man is called Prince.

Introduction:

Chu You Ran, an orphan in 2 1 century, accidentally crossed to Chu You Ran with the same name in different time and space. When she woke up, she was trapped at the bottom of a cliff, where she had an adventure. Ten years later, she became a famous butterfly doctor all over the world. With childhood memories, she found her family and realized the truth of falling off a cliff. ...

He, the third prince of Long Guoxuan, is ruthless and unpredictable. He fell in love with her as soon as he saw her. He dotes on her and loves her just to warm her cold and kind heart.

They love each other and have not been blessed by God. In order to fulfill their mission and save their mother, she gave him a forgetful medicine.