actually it is not suprising for them to walk together
first, they dont really have any serious confrontatioin like border or natural resources something
second, the trading,(EU is now china's largest trading partner, just began this year) brings EU and china together, they are very closely tied now
third, they both have the same goal---building a multi-polar world rather than letting U.S dominates everything
finally, china has money and Germany and France have good weapons. they are just perfect couples..