《黄帝内经·素问·至真要大论》
疟疾的原理也是同样。黄帝道：论中曾说，治寒病用热药，治热病用寒药，医生不能废除这个规矩而变更治疗方法。
帝曰：论言治寒以热，治热以寒，而方士不能废绳墨而更其道也。
The theory applied to malaria is similar. The Yellow Emperor says: In the script, it has been said that heat-removing medicine should be used to treat cold diseases and cold-removing medicine to treat heat diseases. Doctors should not abandon this rule and change the treatment due to the current conditions.