外防输入，内防反弹

Chinese

For pronunciation and definitions of 外防输入，内防反弹 – see 外防輸入，內防反彈 (“to prevent both the importation and domestic growth of cases”). (This term is the simplified form of 外防輸入，內防反彈).

Notes: Simplified Chinese is mainly used in Mainland China, Malaysia, and Singapore. Traditional Chinese is mainly used in Hong Kong, Macau, and Taiwan.