KLM have a sale (not a mistake fare) with great business class fares from a variety of German airports to at least three China airports: Chengdu, Hangzhou and Xiamen.

I used Google flights to search for HAM, FRA, MUC, BER to HGH, CTU, XMN and found 25th March to 1st April for £762 which is EUR999. The search includes multiple departure and arrival airports but I can now only see this price for Chengdu.

https://www.google.co.uk/flights/#search;f=HAM,FRA,MUC,BER;t=HGH,CTU,XMN;d=2015-03-25;r=2015-04-01;sc=b;a=KL

I also tried 13th May to 21st May and got a similar price:

https://www.google.co.uk/flights/#search;f=HAM,FRA,MUC,BER;t=HGH,CTU,XMN;d=2015-05-13;r=2015-05-21;sc=b;a=KL

Again, the search includes multiple departure and arrival airports but I can now only see this price for Chengdu.

The flights go via Amsterdam but when I put AMS in the outbound search field the price jumped to the fare you would expect £2000.

I did try putting Prague in the outbound field and was able to find the same sale fare. So you may find that you can get a deal from your Europe home city. I tried London and the fare went up to £2400.

You need to book by 31st March 2015 and travel dates are from 15th February 2015 with no latest outbound date – although I couldn’t seem to find these fares past October. Stays are between 7 days – 1 month. To get these fares outbound needs to be on a Tuesday/Thursday and the inbound on a Monday/Wednesday.