To begin with, the 'hysterical' character is an exaggeration of the normal attitude; it is then complicated by compensatory reactions from the side of the unconscious, which manifests its opposition to the extravagant extraversion in the form of physical disorders, whereupon an introversion of psychic energy becomes unavoidable. Through this reaction of the unconscious, another category of symptoms arises which have a more introverted character.As I have already sufficiently indicated, I regard the relation of the unconscious to the conscious as compensatory.The attitude of the unconscious as an effective complement to the conscious extraverted attitude has a definitely introverting character. It focusses libido upon the subjective factor, i.e. all those needs and claims which are stifled or repressed by a too extraverted conscious [p. 423] attitude.I'm not really understanding what's so hard to understand. To Jung there is one conscious main function, not two or three, but simply one. Besides the one conscious main function there lies a relatively unconscious auxilliary. Key word is relative, meaning it is relative to the conscious main function and the even more unconscious inferior function. As quoted above the unconscious functions are a complement to the main function-attitude, and contains a different attitude than the main. For an extravert their unconscious, including their relatively unconscious auxiliary function, must have an introverted attitude.For all the types appearing in practice, the principle holds good that besides the conscious main function there is also a relatively unconscious, auxiliary function which is in every respect different from the nature of the main function.