"What Maisie Knew" is the competition unit work of this Tokyo International Film Festival . The film examines the hypocrisy and impetuousness of the grown-up world from the perspective of a 7-year-old girl, Mae Qi. Meqi’s parents are an art businessman and a rock singer. The two who were divorced at the beginning of the film exhausted Meqi’s custody issues, and finally got the result of 10 days of rotation. Both parties found a newly married partner to prove their ability to raise them, and both kept saying that their daughter was their most precious. However, Maeqi knew that she was not happy herself. However, in the tug-of-war battle, Mekie has established a good bond of affection with the "stepfather" and "stepmother" who was forced to get involved in the dispute. However, in the end, not only the two "surrogate parents" were brought together, but Mech himself finally found a happy life of his own. Adults always override their children with their own thinking and values, thinking that what they give their children (usually material) must be the cornerstone of building a happy life for children, but ignores the power of family affection itself. The film is named "Mecchi Knows", or it is just to convey the subjective resistance of a child. The protagonist Meng Meiqi is the biggest selling point of the game. Meki is smart and sensible, independent, and at the same time petite and weak. In many scenes, Maeqi's expression when looking at an adult with her talking eyes is enough to make people shake. When Mech was in a lonely situation because of her parents' irresponsibility, the girl's performance made the reporters who had been numb after watching the film for many days couldn't help but be moved. This work is contrary to the traditional concept of "stepfather and stepmother villain theory", and tells a very standard family story. In the film festival full of darkness, philosophy, political struggle and other themes, cleverly occupy its place.