After the Kuomintang was defeated and retreated to Taiwan in 1949, a group of troops were still on standby in the mountainous areas of Thailand and Burma. In 1961, they were asked to withdraw their troops under pressure from the United Nations, but Chiang Kai-shek secretly ordered them to withdraw openly and covertly, and they waited for fifty years. In order to survive, the lone soldiers without supplies even became Thai mercenaries to help eliminate the Thai Communists. Although their identities have been misplaced for many years, they still cannot change their identification with the "Republic of China". But when their children come to the "motherland", But he has yet to receive recognition and ID card. The complex national identity and situation of this group of people is an absurd and sad page in history amid ideological opposition.