You are using www.flychinasouthern.com in your Internet Explorer?
www.cs-air.com/en won't work for int'l customers.

Have you tried Paypal as payment? This works for me.


Ctrip can book int'l tickets, have you called them? They even have a US number. Alternatively, you can send them an email. However, booking 11 months out - there could be the issue that t/as won't (be able to) book the flights.