Chinese President Xi Jinping has arrived in France, the first stop of his three-nation European tour. The trip will also take him to Serbia and Hungary, two important partners of China in Central and Eastern Europe. The visit came on the heels of a major speech by French President Emmanuel Macron on the risks facing Europe. It also coincides with the 60th anniversary of the establishment of diplomatic relations between China and France and the 75th anniversary of China-Hungary diplomatic ties. Why these three countries? What are the risks or "mischief" that Europe should worry about? And where does China fit in?