Dear Felix, 
Thank you for organizing the amazing trip, all aspects were worked out very well, the guides spoke both German and English fluently and we had lots of fun! 
However, I would like to make a comment - the guides persuaded us (and apparently other tourists too), to feed in the luxuriant tourist restaurants. Speaking to a larger group, I would have understanding of it, yet as a group of only 2 people, one really could have went to a smaller restaurant to taste local specialties. It would not have been more expensive either. If we visit China once more (definitely we will), it would be much better to consult matters alike beforehand . 
Thank you again and many greetings to China, 
Nadejda Kysel