《黄帝内经·素问·五常政大论》
坚成的年份，是金气收敛，天高气爽洁净，地气亦清静明朗，阳气跟随阴气的权力而生化，因为阳明燥金之气当权，于是万物都成熟，但金运太过，故秋收之气旺盛四布，以致长夏的化气未尽而顺从收气行令。
坚成之纪，是谓收引，天气洁，地气明，阳气随，阴治化，燥行其政，物以司成，收气繁布，化治不终。
A Jian Cheng year is a year in which metal energy contracts. The sky is high and the air is clear and pure. The earth energy is clear and bright. The阳 energy transforms and comes to life through the actions of the阴 energy. The power of the阳明 Qi of dry metal is preeminent. Everything ripens and reaches maturity. But the metal energy is excessive, therefore the qi of autumn is strong and widespread. Even the qi change of mid-summer has not yet matured and already it follows the orders of the contracting qi.