HI THERE ARE ME AND MY DAUGHTER TRAVELLING FROM BEIJING TO XIAN ON THE 11TH OCTOBER 2010 WE WANT TO TAKE THE 21.00 HOUR TRAIN AND GET TO XIAN AT 8.50AM. IS THERE ANY DELUXE SOFT SLEEPER FOR TWO PEOPLE AND WHAT DO YOU MEAN SOFT SLEEPER FOR FOUR PEOPLE IS THERE A SEPERATE DOOR BETWEEN THE TWO TOP/LOWER BERTS OF CAN WE BUY ALL FOUR SEATS ALTHOUGH ONLY TWO WILL BE TRAVELLING