BEIJING, Nov 27 (Reuters) - China's state media warned U.S. President-elect Donald Trump his pledge to slap additional tariffs on Chinese goods over fentanyl flows could drag the world's top two economies into a mutually destructive tariff war.

Tariffs look set to be at the heart of Trump’s economic policy and the billionaire made it clear he wants his economic team to hit the ground running in January.

While China could offset American tariffs by letting its currency fall, that might endanger Beijing’s recent efforts to stabilize the economy.