On October 25, 1945, the defeated Empire of Japan gave up control of Taiwan, an island it had ruled for 50 years, to the Republic of China, turning Taiwanese from imperial subjects to citizens of a republic overnight. Eighty years later, Taiwan has undergone monumental changes, yet the significance of Retrocession Day remains complex and even controversial. Bryn Thomas discusses his latest reports covering the 80th anniversary of the end of World War II and what happened next.