Hi Andy
There will be 38 people on your trip.
All meals are included in your holiday so you won't need much money for food. Beer and soft drinks are also included.
So I would advise that you take as much as you are happy to spend - personally, I would take around £300-£400, which would work out at around £30-£40 a day.
Bear in mind too that the Chinese authorities don't allow you to bring more than 6,000 yuan (about £400) into the country - so if you want to take more, you'll need to take other currencies, use travellers' cheques or take your credit or debit card. Kind regards,
Olly, your editor