The following aspects should be paid attention to when introducing May Day slogan paintings and calligraphy works:

1. Theme: It is necessary to briefly describe the creation of the theme of May Day, which can accurately convey the significance and theme of this important festival.

2. Calligraphy and painting form: describe the calligraphy and painting form of the work, including whether it is calligraphy or painting, what font or painting style it is.

3. Visual effect of the work: describe the color and composition of the work and highlight its visual effect.

4. Meaning and expression: It is necessary to describe the author's understanding and description of Mayday, and clearly reflect the expression and ideological connotation of the work.