US presence at Taiwan ceremony strongly protested

Beijing expressed "grave concerns" over Washington sending officials to the opening ceremony of a new office of the American Institute in Taiwan on Tuesday, and urged Washington to keep its promises over the Taiwan question.

Foreign Ministry spokesman Geng Shuang made the remark after Marie Royce, US assistant secretary of state for educational and cultural affairs, and other officials attended the ceremony.

China lodged "solemn representations" with the US, Geng said.