China has protested to the United States after Taiwan's de facto embassy in Washington hoisted a Taiwanese flag on New Year's Day, calling on the United States to respect the "One China" policy, the foreign ministry said on Monday.

Taiwan's China Post newspaper reported on Saturday that it was the first time the Taiwanese flag was raised in the United States in 36 years since the United States switched recognition from Taiwan to Beijing in 1979.

More than 100 people attended the ceremony at the Twin Oaks Estate in Washington last Thursday, including Taiwan's top envoy to the U.S. Shen Lyushun, the China Post said, citing the Taipei Economic and Cultural Representative Office in Washington.