It is stated in Suwen-Zhizhenyao Da Lun. For deficiency fatigue and pestilent qi, warming and tonifying medicines are used for recuperation. For example, if there is insufficient middle qi, resulting in body heat with sweating, thirst with a preference for hot drinks, shortness of breath, reluctance to speak, a tender and pale tongue, and a weak and large pulse, the method of "sweet and warm to eliminate great heat" should be used.