Both walls of pagoda one found in China? (5)
I believe the answer is:
panda
'one found in china?' is the definition.
(pandas are native to China)
I cannot understand how the remainder of the clue works.
(Other definitions for panda that I've seen before include "One bearlike" , "See 17" , "(a cuddly-looking bear)" , "One eating bamboo" , "Large black-and-white herbivorous mammal" .)