Ling Jichen is also the same. He has changed. After encountering the cold promise, he has changed slowly. He is not so cold. He has become human. He has also become fond of laughter and has a lot of young mentality.

he fell in love with her, but as a son of a rich family, his sense of superiority from childhood made him impossible. He didn't know how to get along with an ordinary girl, because in his concept, if he liked it, he would get it. After he was sure to fall in love with the promise, he wanted to hold on to it more closely.

Maybe he is...