Rhizome

Often when you see that, it means vaginal discharge.

Due to cold from deficiency of the spleen and kidneys, and codonopsis radix, dongxian, poria, fuling, and allosmatis, rhizoma zexia.

And then we have that one variation of this formula, frigid extremities decoction plus ginseng.

So Xin Ni Jia Ren Shen Tang is a variation of the main formula where diarrhea ceases, but the extremities remain cold, indicating severe injury to the yin and blood, which harms the source of qi.