Eighteen Contradictions: Radix Aconiti Lateralis can't be used with Pinellia ternata, Melon Basket, Ampelopsis, Bletilla striata and Glycyrrhiza uralensis, while Li Ru can't be used with Ginseng, Radix Adenophorae, Radix Sophorae Flavescentis, Radix Scrophulariae, Asari and Radix Paeoniae Rubra! Nineteen Fears: Sulfur and Puxiao, Mercury and Arsenic, Stellera chamaejasme and Lithargyrum, Croton and Petunia Clove and Turmeric, Nitrate and Sparganium, Kusnezoff monkshood and rhinoceros horn, Oletum Trogopterori, Cinnamon and Halloysitum rubrum cannot be used together!