Depth referred to whether the thoughts, values, and emotional content expressed in the work were rich, profound, and meaningful, and whether they could resonate with the audience. In-depth animation works usually had the following characteristics: 1. Exploring a profound theme: For example, life, love, friendship, faith, power, morality, etc. can cause the audience to think and discuss the theme. 2. Create a profound character: Each character's personality, experience, and values can resonate with the audience and make them feel real and three-dimensional. 3. Demonstrate deep emotions: The emotional descriptions and inner monologues in the works can make the audience feel the depth and exquisiteness of emotions. 4. Use profound language and expression techniques, such as music, pictures, sound effects, etc., to resonate and empathize with the audience. 5. Profound social significance: The work can reflect social reality, discuss social problems, and arouse the attention and consideration of society. A deep animation not only had a complex storyline and profound character creation, but it also resonated with the audience through the thoughts, emotions, language and other elements in the work. It had profound meaning and value.