Li Ranran and Yu Zhixing went from acquaintance to mutual acquaintance to falling in love. There were twists and turns and ups and downs in the process, but they were still together in the end (adapted from real life and personal experience. The novel is the ending that the author yearns for, but reality often gives way to wishes, so the real story is left in the extra chapter)
Purpose: Loving someone is very difficult, so you have to persevere