The river is not a river, but a tool for the future, a place where you can meet the deceased.
The long river is composed of energy, and she was born because of the chaos of energy.
But, is this really the case?
She could tamper with other people's memories, so she became Mu Yi's sister.
But Mu Yi knew that his sister fell to her death when she was 10 years old.
Different face, different personality, is she really just a sister?
Two years is neither long nor short, but it is her life span.
What can be changed in 2 years, and what can be taken away?
Can we really just say goodbye?