I once dreamed of a butterfly. The butterfly was very familiar, as if I had seen it somewhere. He drifted effortlessly to the vicissitudes of the sea, and finally landed on a clear silver mirror. He never left it until the end of his life.
It seemed that the mirror was so beautiful that he fell in love with it, and that's why he was willing to spend his life interpreting it.
That's like a butterfly falling in love with a mirror, just like day Yan falling in love with Han Liu.
"I exist in your past and your future."
Purpose: People often burst out of their potential in desperate situations