Xi Jinping’s state visit to Washington in September was steeped in pageantry. The Chinese president received two 21-gun salutes in three days, watched a flyover by the powerful B-2 stealth bomber, and viewed the founding documents of American democracy at the National Archives. US President Donald Trump called his summit with Xi a “great meeting” and rated it a “12 out of 10”. Xi was also positive, saying “everything is done to the highest order of perfection, and there is thought in every...