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
Free area of the Republic of China used, especially in contexts of trade and exchange. In contrast to the "free area" is the "mainland area", which the Act Governing Relations between the People of the Taiwan Area and the Mainland Area defines as "the territory of the Republic of China outside the Taiwan Area." However, on more practical grounds, the "mainland area" refers simply to mainland China. In addition, there are two other Acts defining other "areas": the "Hong Kong Area" and the "Macau Area". The hand-over of these former European colonies to the People's Republic of China necessitated laws governing the relations of the Taiwan Area