Purchased by local man, a Chinese calendar (7)
I believe the answer is:
almanac
'calendar' is the definition.
(I've seen this before)
'purchased by local man a chinese' is the wordplay.
'purchased by' indicates a hidden word.
'ALMANAC' is hidden within 'local man a chinese'.
(Other definitions for almanac that I've seen before include "Annual publication giving dates of astronomical and other events" , "source of information" , "Annual publication with weather forecasts etc." , "Annual calendar or handbook" , "Sailor's or farmer's calendar" .)