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
Nationality law of the People's Republic of China restrictions as long as they arrive from a third country. In accordance with the "Act Governing Relations between the People of the Taiwan Area and the Mainland Area" of the ROC, any ROC national with Household Registration (ROC nationals with full citizenship rights in Taiwan) who obtains a passport issued to Mainland residents of the PRC or hukou of Mainland China, automatically loses his Household Registration in Taiwan, which in turn causes the loss of the person's citizenship rights in the ROC (since he or she has already obtained the "de facto" citizenship of Mainland China). However, the person does