President Tsai Ing-wen’s (蔡英文) telephone call with then-US president-elect Donald Trump last month and his questioning of the “one China” policy have angered Beijing. Chinese Minister of Foreign Affairs Wang Yi (王毅) mocked Tsai for playing a “petty trick,” but the call was planned weeks in advance and assisted by Trump’s Taiwan-friendly aides and advisers who see the nation as a natural ally of the US.