The poster of Bos Math Festival is painted like this: color matching, font selection and pattern design.

1, color matching: choose bright and bright color matching, such as blue, green and yellow. Make the poster look more lively and interesting.

2. Font selection: Choose a suitable font to make the title and content of the poster more prominent and easy to read. You can choose some modern fonts with simple lines, such as Helvetica and Roboto.

3. Pattern design: Adding some interesting mathematical patterns to the poster, such as mathematical symbols and graphics, can make the poster more mathematical.