Zhang's sixth generation of ancient prescriptions, really?

Really. Zhang's sixth generation ancient prescription Zhenji decoction does exist, and it is a prescription of traditional Chinese medicine. Created by Mr. Zhang Xichun in Jiaqing period of Qing Dynasty, it is called "the secret recipe handed down by the Zhang family for six generations", which can clear away heat and toxic materials, relieve swelling and pain, dispel wind and relieve itching, and is widely used to treat damp-heat, itching, rheumatism and other diseases.