This practice of turning back the clock 28 years (known in the industry as "decrementing") has a peculiar variant in Taiwan, where the Western calendar exists side-by-side with a date system that takes the first year of the Republic of China (1912) as year 1.
和「倒退二十八年」有異曲同工之妙的，則是有人將台灣慣用的民國紀年，以西元年份表示。