He led a vicious campaign to portray all Taiwanese with mainland Chinese roots, even if born and bred in Taiwan, as untrustworthy carpetbaggers – wai shen ren , or “not native people” – as if they were aliens from a different culture. This official effort to portray native “Taiwanese” as a separate ethnic group, with scant relation to Chinese culture, was extended to language, as Chen favored using the Fujian dialect in lieu of the Mandarin spoken by 1.3 billion Chinese and taught all over the world.