A.
the retaining and its duration is depend on the pathological conditions
B.
in general, the needle is retained for forty to fifty minutes after the arrival of Qi
C.
for some chronic, intractable, painful and spastic cases, the time of retaining the needle may be appropriately prolonged
D.
manipulations may be given at intervals in order to strengthen the therapeutic effects
E.
retaining the needle may prolong the needling sensation