Why is the forbidden city closed to foreigners?

The Forbidden City, located in Beijing, is not entirely closed to foreigners; however, access may be restricted during certain times or events for preservation or security reasons. It primarily serves as a cultural heritage site, and restrictions can help manage the flow of visitors to protect its historic structures and artifacts. Additionally, during significant national events or ceremonies, access may be limited to maintain security and order. Overall, the goal is to balance tourism with the preservation of this UNESCO World Heritage site.