Hi Chrischina,
It is very early for bookings to China at that time of year regardless of where you are flying from, but there is one person currently booked on this date. We tend to see these dates starting to attract bookings after the next brochure lands with customers (due out at the end of December beginning of January).
Looking at 2013 dates for China, all departures were either operating at full capacity or near full capacity and the Manchester date did sell out. For the September 2014 departure there are only 20 places available on the main tour and 14 available on the main tour with the Yangtze add-on.
I hope this information helps and if I can be of any further assistance, please do not hesitate to contact me.
Kindest regards,
Julia