How much is a liter of Treatise on Febrile Diseases now? It is necessary to provide theoretical basis, such as provenance, for the convenience of people behind to verify and use it.

Treatise on Febrile Diseases was written by Zhang Zhongjing, a medical sage in the Eastern Han Dynasty, and the unit of measurement should of course be branded with weights and measures in the Eastern Han Dynasty. According to Appendix 3 of Selected Readings of Treatise on Febrile Diseases, Shanghai Science and Technology Publishing House, "Notes on Drug Dosage of Treatise on Febrile Diseases": "1 rose to 200ml in the Eastern Han Dynasty, and 1 was 20ml".