During the 228 Incident, 1947, the Nationalist Government concocted fictitious plights of Mandarin victims. In these fabricated stories, thousands of Mainlanders and children were brutally killed, and many women were raped. These untruths cooked up and propagandized by the authority served to provide the legitimacy of suppression. The Nationalist Government used these lies to defame the protesters, libeling them as 'mobs', thus justifying their act of using violence to restore order. Tracing the case of a Mainlander female teacher who was 'claimed' to have been raped and died, this article illustrates how the Nationalist Government forged falsehoods and used libels and lies as tools in their propaganda for legitimacy of suppression in the 228 Incident.