China has suspended natural sand exports, while also blocking imports of citrus fruits, chilled white scallops, frozen mackerel, confectionery, biscuits and bread. US House Speaker Nancy Pelosi defied repeated warnings from Beijing and met President Tsai Ing-wen on Wednesday in Taipei.

Chinese warplanes buzz Taiwan Strait dividing line. Expected U.S. House speaker's visit has enraged Beijing. Beijing insists self-ruled Taiwan is part of China.