In tourist areas, you can often see individual tourists depicting the words "so-and-so is here" on places of interest. What social rules did such behavior violate?

Visitors who scratch, smear or otherwise damage the scenery will bear legal responsibility according to law.

The regulations stipulate that tourists should abide by laws and regulations, fulfill the obligations stipulated in travel contracts, respect the ethnic customs and religious beliefs of tourist destinations, protect tourism resources and ecological environment, take good care of tourism facilities, and abide by the provisions on tourism order, safety and health management. They must not violate social morality, scratch, smear or otherwise damage scenery and tourist facilities, and hinder the legitimate rights and interests of others. According to the requirements, tourists who scratch, smear or otherwise damage scenery, facilities or litter will bear corresponding legal responsibilities according to law.