The Ziwuliuzhu(midnight-noon ebb-flow)needling of acupuncture theory was generally considered to be a representative perfect example of traditional acupuncture theory.It is created in the Jin and Yuan Dynasties

and has been being frequently cited thereafter.It is mainly derived from and inherits the theory of Wuxing(five-elements)doctrine of traditional Chinese culture in ancient China

for which the Wushu-points

five specific acupoints on the distal ends of the arm and leg

i.e.

Jing(Well-points)

Xing(Spring-point)

Shu(stream-point)

Jing(river-point)and He(sea-point)to match the Wuxing so as to calculate their open time according to the Heavenly Stems and Earthly Branches designating the years

months

days and hours in ancient China.Although it has been repeatedly copied in Chinese medical books

this theory was not really used by clinical acupuncturists in the Jin

Yuan and following dynasties.The present theory came up in the special time

primarily being derived from the combination of medical and Confucian theories in the Song Dynasty.Nowadays

we should thoroughly make known its connotations

and do not make heedless affirmation and clinical validation.