China will open up its economy further, and its door to the outside will only get wider, with foreign and domestic firms allowed to compete on an equal footing, Premier Li Keqiang said at the close the country's annual parliament session on Tuesday. The familiar-sounding pledges from Beijing came as the prospect of a global trade war loomed in the wake of U.S. President Donald Trump imposition of hefty import tariffs on steel and aluminum earlier this month.