Show Chinese doctrine contains excessive spin (6)
I believe the answer is:
tattoo
'show' is the definition.
(I have seen 'Military show ' mean 'tattoo' so perhaps 'show' could also mean 'tattoo')
'chinese doctrine contains excessive spin' is the wordplay.
'chinese doctrine' becomes 'oat' (I can't justify this - if you can you should believe this answer much more).
'contains' is an insertion indicator.
'excessive' becomes 'ott' (short for 'over the top').
'spin' is a reversal indicator.
'oat' going around 'ott' is 'oottat'.
'oottat' back-to-front is 'TATTOO'.
Can you help me to learn more?
(Other definitions for tattoo that I've seen before include "Military display - picture on the skin" , "Pointedly design" , "Picture dyed into the skin" , "personal adornment?" , "Skin drawing" .)