《三国志·魏书·少帝纪》
淳于俊回答说： 三皇的时代，人类少而飞禽走兽很多，所以取禽兽的皮毛就足够人们使用了。等到黄帝时期，人类多但飞禽走兽已经变少，所以要制作衣裳来适应季节的变化。 
俊对曰： 三皇之时，人寡而禽兽众，故取其羽皮而天下用足，及至黄帝，人众而禽兽寡，是以作为衣裳以济时变也。 
Chunyu Jun answered: In the Three Sovereigns and Five Emperors’ time, population was small but there were lots of birds and beasts. So people could make clothes with birds’ and beasts’ fur. By Huangdi’s time, population was big and there were fewer birds and beasts. So people had to make clothes to suit the changes of the season.