[Moisture] and [Blood] are both [Yin] in quality and sometimes talked about together, under the name [Blood]. [Moisture] is the intermediate state of [Blood] generating to [Qi] and [Qi] transforming [Blood]. [Blood] is often called the "mother of [Qi]". [Qi] and [Blood] are intimately related in a feedback loop where [Blood] nourishes the [Organs] that produce and regulate the [Qi], and [Qi] creates and moves the [Blood], together with [Shen].