Smoke keeps breathing organ working in Chinese system (5,4)
I believe the answer is:
falun gong
'chinese system' is the definition.
(Chinese religious movement)
'smoke keeps breathing organ working' is the wordplay.
'smoke' becomes 'fag' (I've seen this before).
'keeps' indicates putting letters inside.
'breathing organ' becomes 'lung' (I've seen this before).
'working' becomes 'on'.
'lung'+'on'='lungon'
'fag' enclosing 'lungon' is 'FALUN GONG'.
'in' acts as a link.
(Other definitions for falun gong that I've seen before include "exercise regime" , "Meditation" .)