The [Stomach] has a paired relationship with the [Spleen]; the [Spleen] rules ascending whilst the [Stomach] sends material down: the pure part to the [Spleen] and the remainder to the [Small Intestine] for further digestion. If the receiving and descending functions of the [Stomach] are impaired, symptoms such as nausea, stomach ache, distention, belching or vomiting may ensue.