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 population descends from Han Chinese who migrated from mainland China between 1661 and 1895. Another significant fraction descends from Han Chinese who immigrated from mainland China in the 1940s and 1950s. But between 1895 and the present, Taiwan and mainland China have shared a common government for only 4 years. The shared cultural origin combined with several hundred years of geographical separation, some hundred years of political separation and foreign influences, as well as hostility between the rival Taiwan and China have resulted in national identity being a contentious issue with political overtones. Since democratization and the lifting of martial