On the flight from Amsterdam to Hangzhou Saturday, I observed some interesting behaviour on the part of my Chinese co-travellers. After the main meal, the stewardesses went around hawking tax-free goods. At this time, a bunch of people stood up and formed a large prattling group in the aisles toward the rear of the plane where myself and Junior were seated. They seemed to be discussing the merits of the wares among themselves and with the Chinese stewardess, reading labels and handing packages around for inspection. The whole thing looked like a cross between a cocktail party and an Oriental market, and it sounded like a flock of jackdaws. Everybody was clearly having a good time. Then, after 45 minutes or so, they went back to their seats and most of them fell asleep. Upon landing I learned that these gregarious people were on a group trip and so must have been at least slightly acquainted.