Original sentence: Because the "Republic of China" has been far better known as "Taiwan" since the 1970s, many Taiwanese travelers have experienced difficulties with immigration officials overseas mistakenly believing that they were from the PRC
Edited sentence: Because the "Republic of China" has been far better known as "Taiwan" since the 1970s, many Taiwanese travelers have experienced difficulties with immigration officials overseas mistakenly believing that they were from "China" (People's Republic of China)