The Battle of Tunmen (Chinese: ????) was a naval battle in which the Ming dynasty imperial navy defeated a Portuguese fleet led by Simão de Andrade in 1521.
Simão de Andrade had been kidnapping Chinese children to sell in Malacca. and ignored Chinese sovereign authority at Tãmão, building a fort. The Chinese believed that the Portuguese roasted and ate the Chinese children they had kidnapped. The Chinese responded by blockading the Portuguese. The Portuguese would have starved if they had not run the blockade.