Unknown boy hero on top in China (7)
I believe the answer is:
pottery
'china' is the definition.
(thesaurus)
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for pottery that I've seen before include "Ceramics factory" , "Ceramic ware" , "Earthenware" , "Items made from clay" , "Clayware" .)