Capital of China — Rome, strangely? (7)
I believe the answer is:
palermo
'capital' is the definition.
(I've seen this before)
'china rome strangely?' is the wordplay.
'china' becomes 'pal' (I've seen this before).
'strangely?' is an anagram indicator (I've seen 'strangely' mean this).
'rome' is an anagram of 'ermo'.
'pal'+'ermo'='PALERMO'
'of' is the link.
(Other definitions for palermo that I've seen before include "ity of Italy" , "Sicilian city" , "Chief city of Sicily" , "Italian capital" , "Main city of Sicily" .)