Flag of the Republic of China sovereign independent country of the Republic of China (ROC) to the island of Taiwan. On the mainland, the communist forces of Mao Zedong established the People's Republic of China and adopted their own national flag. On October 23, 1954, the National Emblem and National Flag of the Republic of China Act () was promulgated by the Legislative Yuan to specify the size, measure, ratio, production, and management of the flag. While public display of the ROC flag is generally frowned upon, and may even lead to arrest in the PRC, Cambodia was the first country to outlaw it officially. In
Politics of the Republic of China this structure remains in place, the President Lee Teng-hui in 1991 unofficially abandoned the government's claim of sovereignty over mainland China, stating that they do not "dispute the fact that the Communists control mainland China." However, the National Assembly has not officially changed the national borders, as doing so may be seen as a prelude to formal Taiwan independence (the People's Republic of China has threatened to start a war if the government of Taiwan formalizes independence). It should be noted that neither the National Assembly nor the Supreme Court has actually defined what the term "existing national boundaries," as