The novel tells the story of the protagonist Meichen and her five friends, Lu Meng, Minmin, Xiao Ai, Chen Xu, and Yifei, as they grew up from ignorant teenagers to starting their own families and starting businesses. During this period, there were inspirational stories, interesting things full of infinite joy, and tangled sentiments. There were separations and reunions, gatherings and separations. Meichen is talented, beautiful, and kind, but she is cold and difficult to approach. Lu Meng, the closest male protagonist to Mei Chen, has a cold and outstanding appearance, but is equipped with an inner disposition - eager to help others, with a trait: playful. Min Min is a top student and a powerful person, while Chen Xu is a show-off little bully with a special trait: having a sense of justice. Little love, lively and cute. Yifei likes to sing double sex with Xiao Ai, and his characteristics are: lovable. Sometimes the story takes place in the same space, and sometimes it seems to be in different spaces. The novel names the space as "domain"; as the characters in the novel grow, their "mental domains" are also shrinking or expanding, approaching or moving away from each other. Fortunately, no matter what, they are related to each other with "love". In the end, some become partners, some become confidants, and some become people that the other party can't let go of. The characters in the novel are those born after 1985. The story may be a bit old-fashioned and the emotions may be a bit simple, but it might as well become a diary for us to recall those fleeting years. It might as well become a youth textbook for today's children, "Love does not necessarily require two people to walk side by side; there are many people who love in the name of friends. They love beautifully in their own hearts."