Heartfelt Diary summary:

Eldest daughter of the Zhan family, Zhan Chuyi, whose been raised in a carefree environment for over two decades, decides to take over the family business smoothly and starts working hard to build her career. She sets her sights on a nearly bankrupt film company as her practice ground. It just so happens that her new neighbor is the top actress of this company, so naturally, she tries to get close to her.No dress ? Wear mine.No money? Spend my money.No guests? Sure, I'll attend!No one to take care of the cat? Well, I guess I could do that too.She successfully acquires the small company and also ends up... gaining a beautiful jiejie.