The most common and most likely answer to this crossword clue is the 4 plus 2 letter word KUNG FU
I've seen this crossword clue in The Guardian
K
U
N
G
F
U
More clues leading to the result KUNG FU
- Martial art’s good fun struggling under a couple from Kuancheng
- Fine antelope in country turned up in Chinese art
- Britain upset farmers over government defence system
- Country backing force during tricky gun fighting method
- State backing leads to new guns for unconventional way of fighting
- Oriental art work ultimately attracting deep breath perhaps when removed from case
- Martial art king's gun is kaput — has endless fun
- King, peacekeepers and leaders of great fighting units formulated Wu Shu
- Martial art genius occasionally visiting this country, upset receiving fine
- Martial art created by partner interrupting a thousand peacekeepers for all to see
Buddy explains!

The straight part
We know that "Chinese art" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case chinese art = kung fu.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does KUNG FU mean?
KUNG FU noun- A Chinese martial art.