Summary of deal: €1528 / £1310 / $1624 Luxembourg to Shanghai via London, returning to Brussels. British Airways Business Class. Plenty of availability.
Go to deal, then book on British Airways.
Price: €1528 / £1310 / $1624. Can be ticketed as Brussels round trip for €1552 instead of the open jaw as detailed below.
The Luxembourg/Brussels-London-China-London-Brussels routing would give 360 Tier Points for your British Airways Executive Club. That's over halfway to Silver or Oneworld Sapphire.
Don't forget to stack this with the Triple Avios offer if flying in 2016.
Class of travel: Club World (Business Class)
Ticket Type: Open Jaw return.
Departure City: Luxembourg City, Luxembourg
Arrival City: Shanghai, China
Return City: Brussels, Belgium
Stops: London (LHR)
Airline: British Airways (Luxembourg page)