This formula was first recorded in 1587. It is a cleverly designed formulation, containing elements of the following formulas: Xiang Sha Liu Jun Zi Tang (Saussurea & Cardamon Formula), Er Chen Tang (Citrus & Pinellia Formula), Hou Po Wen Zhong Tang (Magnolia Bark Decoction for Warming the Middle [Jiao]) and Ping Wei San (Calm the Stomach Powder). Some herbs have been omitted in this variant, which uses alternatives. And thus, it is more focused on regulating the Qi and resolving stagnation in the digestive tract, together with resolving turbid Damp that is obstructing the middle Jiao.

This formula has herbs that may regulate the Qi and harmonise the middle Jiao, and may also have a therapeutic action to dry turbid Damp. In addition, the tonifying action of this formula is mild and will not add to the Damp or the Qi stagnation, because the main tonifying herbs may  also resolve Damp.

It has a broad range of application in conditions where the Spleen and Stomach have lost their harmonious co-ordination due to one or more of the following: retention of Damp, food stagnation or Liver Qi invasion. Thus it may be applied as a stand alone treatment or used in an appropriate combination.