I have just booked a $512 RT SFO-Shanghai in March for a two-day turnaround trip. I even got to use my SW upgrades. I've applied for my visa but what do I tell the immigration authorities once I arrive. I can't imagine that a government employee in a communist country would understand 'mileage run' and I don't want to be mistaken for a drug smuggler. Anybody had any experiences with Asian countries and quickie trips. Thanks, Paul