I was very glad I ignored the hotel advice and booked my car forty minutes earlier. I boarded on time, but with none to spare. But small problem. At Charles de Gaulle check-in, my boarding pass showed a 15-hour layover in Guangzhou instead of 4. Which is why I have time to write this letter. I spoke to the main man on the China Southern Airlines counter—but he had a big Boeing to get off the ground and no time for my crisis. ‘Go to the transfer desk in Guangzhou,’ he said— ea