1, concise and clear: the audience of the video of the math story is children and teenagers, so the copy should be concise and easy to understand.

2. Lively and interesting: The purpose of the math story video is to make children fall in love with math, so the copy should be lively and interesting to attract children's attention.

3. Knowledge: Math story videos should incorporate certain math knowledge, so that children can learn math knowledge while watching stories.