No substantial measure favoured by the Chinese (4)
I believe the answer is:
inch
'no substantial measure' is the definition.
'inch' can be an answer for 'measure' (inch is a unit of length). I am unsure of the 'no substantial' bit.
'favoured by the chinese' is the wordplay.
'favoured' becomes 'in' (I've seen this in other clues).
'by' is a charade indicator (letters next to each other).
'the chinese' becomes 'ch' (I've seen this in other clues).
'in'+'ch'='INCH'
Can you help me to learn more?
(Other definitions for inch that I've seen before include "nose" , "Move very slowly - a very short distance" , "Move by slow degrees" , "Short measure; island" , "Creep towards < island" .)