Chinese leader Xi Jinping presided over a major military parade Sunday, hours after US President Donald Trump renewed his criticism over Beijing's failure to rein in North Korea. The parade, long anticipated but only officially announced Saturday, was part of the celebrations of the 90th anniversary of the People's Liberation Army (PLA). It was also viewed as a potent reminder of Xi's firm grip on power ahead of a key Communist Party meeting this fall, where a major leadership reshuffle is expected.