It should be poria cocos. Poria cocos is mainly used for syphilis. Poria cocos strengthens the spleen, promotes diuresis and permeates dampness, and has the effect of calming the heart and calming the nerves. Astragalus membranaceus can replenish qi and defend qi, and improve immunity. Yam tonifies the lung and spleen, nourishing yin and rehydrating, and Codonopsis pilosula tonifies qi and blood. Mainly used for people with spleen and stomach weakness and deficiency of qi and blood. Poria cocos is definitely Poria cocos.