《淮南子·主术训》
过去神农氏治理天下，精神沉静而不躁动驰骋于胸中，智慧藏匿而不显露于身外，只怀着一颗仁爱真诚之心。因而自然界甘雨及时降落，五谷繁茂生长，春生夏长，秋收冬藏。按月检查，每季考察，到年底向祖宗神灵汇报丰收成功的喜讯，按季节尝吃新谷，在明堂祭祀祖宗神灵。
昔者神农之治天下也，神不驰于胸中，智不出于四域，怀其仁诚之心，甘雨时降，五谷蕃植，春生夏长，秋收冬藏，月省时考，岁终献功，以时尝谷，祀于明堂。
In the past, the Shennong clan ruled the world, his spirit was calm and not impetuous and galloping in his chest, his wisdom was hidden and not revealed in his body, he only had a benevolent and sincere heart. As a result, the timely rain fell in the natural world, the five grains grew and flourished, spring was born in summer, autumn was harvested and winter was stored. Check monthly, inspect every season, and report the good news of a successful harvest to the ancestral spirits at the end of the year. Eat the new grains according to the season, and offer sacrifices to the ancestral spirits in the Mingtang.