Leaves from Asia — temperature in that part of world has shifted (4)
I believe the answer is:
teas
'leaves from asia' is the definition.
(tea leaves)
'temperature in that part of world has shifted' is the wordplay.
I cannot really understand how this works, but
'temperature' could be 't' (abbreviation) and 't' is found within the answer.
The remaining letters 'eas' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for teas that I've seen before include "Afternoon meals" , "Beverage made by steeping leaves in water" , "Beverages from leaves" , "Hot drinks" .)