Ren Zhong Huang: An Ancient Medicinal Product Soaked in Bamboo Scroll and Human Feces Pit

Ren Zhong Huang, also known as Gancao Huang or Gan Zhong Huang, is mentioned in the book "Rihua Zi Bencao". It is a product made by soaking licorice powder in a bamboo scroll and then soaking it in a