As long as they still love each other, the answer of one plus one in Jin Yi's mouth will never be two. This is a promise. They have known each other since high school. Jin Yi got rid of the miserable life brought by his original family and built the best future together with Huang Huai. They grew up through experience after experience, got to know their true selves, and encouraged each other to enter a new life together.
Concept: Love is equal, without any distinction between high and low