Thanks Chinese president for transport option (4)
I believe the answer is:
taxi
'transport option' is the definition.
'taxi' can be an answer for 'transport' (I've seen this before). I'm not sure about the 'option' bit.
'thanks chinese president' is the wordplay.
'thanks' becomes 'ta' (UK informal version of 'thank you').
'chinese president' becomes 'xi' (I can't explain this - if you can you should believe this answer much more).
'ta'+'xi'='TAXI'
'for' is the link.
Can you help me to learn more?
(Other definitions for taxi that I've seen before include "Danny DeVito sitcom" , "move on ground before take-off" , "type of vehicle" , "Public service vehicle" , "Motor vehicle for hire with driver" .)