Compatriots from Hong Kong, Macao and Taiwan are welcome to return to the mainland.
Tips
culture
An official PRC abbreviation bundling 香港 (Hong Kong), 澳门 (Macao) and 台湾 (Taiwan), typically used for policy, visas, sports delegations, and admissions quotas (港澳台联考 is a special university entrance exam for these students).
usage
Apostrophe is written (Gǎng'àotái) because ào starts with a vowel; without it the pinyin could be misread. The term is politically loaded: it groups all three as 'non-mainland Chinese' regions, reflecting the PRC framing.