There are several examples of Pair-point treatments in Yellow Emperor's Inner Classic (Huang di nei jing). For example, Yellow Emperor's Inner Classic ( Huang di nei jing) terminologies such as "coupled needling", or "adjacent needling", are in fact a combination of two acupuncture points. Spiritual Pivot (Ling shu )" the Official Needling chapter states: 'For "coupled needling", place hand over heart and back, palpate the tender point.
At the  tender point location, needle at front of the body, and needle at the back of the body, to treat heart bi or blockage.' In case of "adjacent needling", place a needle perpendicularly and place another needle adjacently, to treat long residing bi or blockage". Coupled needling is the combination of the front and back of the body trunk. Adjacent needling is a combination of two adjacent acupuncture points. These are two examples of Pair point combinations.
In addition, Yellow Emperor’s nner Classic (Huang di nei jing) also recorded some combinations of fixed opposing points.  For example, in Spiritual Pivot (Ling shu), Five Pathogenic Factors states "if the pathogenic factor is in the kidney.., needle Yongquan (KII) and Kunlun (BL60)". This is an example of the application of a two point combination.
The Classic of Difficulties (Nan jing) also mentioned several point combinations that appeared in pairs. In The Classic of Difficulties (Nan jing), the Sixty-ninth difficulty states, "In case of deficiency, tonify its mother; in excess, reduce its son. One should always tonify first, and then reduce." Here it illustrates the selection of combined points through the mother and son relationship.
Furthermore, in The Classic of Difficulties (Nan jing), the Seventy-fifth difficulty states "Reduce the fire in the south; tonif.y the water in the north. Southern fire
is the son of wood. Northern water is the mother of wood. Water triumphs over fire. Son can fulfill the mother, and mother can empty the son.Therefore, reduce the fire to tonify water, causing gold not to pacify wood." The "reduce south and tonify north" method is used for treating "excess Diver and deficient lung." This is an example of the Pair-point method based on the five elements.
Therefore, although there are no set Pair-point combinations explicitly stated in Yellow Emperor's Inner Classic (Huang di nei jing) or The Classic of Difficulties (Nan jing), there are many combinations of two acupuncture treatment points listed with their own principles and regularities.