When she was a child, Yi Yun felt that she and her sister were the darlings of the whole family;
When she grew up, Yi Yun felt that her sister was the best person to her, just like her parents;
As she grows older, Yi Yun realizes that her sister and mother are the people who love her most in the world;
Later, Yi Yun knew that her sister was the only one who was kind to her now;
But in the end, Yi Yun couldn't figure out why her sister wasn't as kind to her as she was when she was a child.
When did her sister start not understanding and respecting her?