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
First Taiwan Strait Crisis of southeastern China. Hainan island fell to the Communists in April 1950 and the Choushan islands were evacuated by the Nationalists in May 1950, even before the First Taiwan Strait Crisis. The Matsu and Kinmen island groups, situated in the Taiwan Strait just off the coast of the Chinese mainland, were the Nationalists' first line of defense against the Communist Party of China and were heavily fortified by Chiang. The islands off the shore of Zhejiang province were seen as a foothold to recover the mainland and housed the reduced provincial government of Chiang's native province. While the United States