Twist, say, for rising Chinese dynasty (6)
I believe the answer is:
orphan
'twist say' is the definition.
(I know that Oliver Twist is a orphan)
'for rising chinese dynasty' is the wordplay.
'for' becomes 'pro' (as in being 'pro' or in favour of something).
'rising' says the letters should be written in reverse (going up in a down clue).
'chinese dynasty' becomes 'han' (I've seen this in another clue).
'pro' reversed gives 'orp'.
'orp'+'han'='ORPHAN'
(Other definitions for orphan that I've seen before include "One deprived" , "little Annie, maybe?" , "Child with no living parents" , "child all alone" , "Child left" .)