Three generations have known each other, and the two families are only ten minutes away from each other. Cheng Jihuan was born with bipolar disorder and cried like a kitten when he was born. Brother Cheng Jiyan and Shen Yan are in the same class and grew up together. They are the people who trust each other the most. Shen Yan is an INTP, pursuing an official career, being rational, direct, and not saving. Cheng Jihuan is an actor with a roller coaster of emotions and is used to being treated as fragile. Shen Yan never said "What's wrong with you?", She just handed him the medicine box when he forgot to take medicine, and sat next to him when he didn't speak. She didn't think there was anything wrong with him - he didn't need comfort, he didn't need accommodation, he didn't need special treatment. He just needs to be treated like a normal person. And that's exactly how she saw him.