R Leo where did you go see the Great Wall? We went to Badaling north of Beijing in December of last year when it was a bit nippy. I made it up two towers before the steps became 2 feet high and the 30F wind was going over 40mph horizonally
Were they running a lot of diesel in Xian? Everywhere in Beijing and Shanghai is the same Volkswagen Santana 2000 or 3000 runing on LPG. Hyundai Accents and Renaults.
BTW, is your bride Chinese?