《黄帝内经·素问·至真要大论》
岐伯说：厥阴司天为风化，在泉为酸化，岁运为苍化，间气为动化；少阴司天年为热化，在泉为苦化，岁运不司气化，间气为灼化；太阴司天为湿化，在泉为甘化，间气为柔化；少阳司天为火化，在泉为苦化，岁运为丹化，间气为明化；阳明司天为燥化，在泉为辛化，岁运为素化，间气为清化；太阳司天为寒化，在泉为咸化，岁运为玄化，间气为藏化。
岐伯曰：厥阴司天为风化，在泉为酸化，司气为苍化，间气为动化。少阴司天为热化，在泉为苦化，不司气化，居气为灼化。太阴司天为湿化，在泉为甘化，司气为黅化，间气为柔化。少阳司天为火化，在泉苦化，司气为丹化，间气为明化。阳明司天为燥化，在泉为辛化，司气为素化，间气为清化。太阳司天为寒化，在泉为咸化，司气为玄化，间气为藏化。
Qibao said: Jueyin in charge of the heavens is wind transformation; in the springs, it is acid transformation; in the transportation of the year, it is blue-green transformation; the interval qi is motion transformation; Shaoyin in charge of the heavens in the year is heat transformation; in the springs, it is bitter transformation; in the transportation of the year, it does not govern qi transformation; the interval qi is scorching transformation; Taiyin in charge of the heavens is damp transformation; in the springs, it is sweet transformation; the interval qi is supple transformation; Shaoyang in charge of the heavens is fire transformation; in the springs, it is bitter transformation; in the transportation of the year, it is red transformation; the interval qi is bright transformation; Yangming in charge of the heavens is dry transformation; in the springs, it is pungent transformation; in the transportation of the year, it is pale transformation; the interval qi is clear transformation; Taiyang in charge of the heavens is cold transformation; in the springs, it is salty transformation; in the transportation of the year, it is black transformation; the interval qi is hidden transformation.