Referred to "Jeungchijunseung(證治準繩" ), "Kyungakjunsu(景岳全書)", and "Uihakyipmoon(醫學入門)", We got the conclusion on the contradiction of KwanKyuk in "Naegyung(內經)" and "Nankyung(難經)" like below. First, It can be defined the fact as Naekwanoikyuk(內關外格) in "Nankyung(難經)" that in "Naegyung(內經)", the Cold from out is too strong that the Yanggi is isolated and vomitted and spread to Hacho(下焦). Because, it is the same phenomenon in "Nankyung(難經)", Yanggi is too strong that invade the stage of Eumgi, and in the flow, overturning situation appears and thru isolation. Same above, We can also understand the fact as Oikwannaekyuk(外關內格) in "Nankyung(難經)" that the Ileum(溢陰, same as Naekwan(內關) or Kwaneum(關陰) in "Naegyung(內經)" ), Heat from Mixed disease(雜病) is too strong that Eumgi is isolated and spreading to Sangcho(上焦). Because, it is the same phenomenon in "Nankyung(難經)" , Eumgi is too strong that invade the stage of Yanggi, and in the flow, overflowing situation appears and thru vomitting.