1, select the right color: select one or more colors related to the legal theme, such as blue, red or black. Using these colors on cardboard can attract people's attention and highlight the importance of slogans.

2. Determine the content of advertising language: determine the information to be conveyed and the laws and regulations to be publicized. These messages should be concise, attractive and attract people's attention, for example, observing the law, building a harmonious society, fairness and justice, and safeguarding fairness and justice.