《汉书·传·王莽传上》
王莽带领大臣们上奏说： 陛下您年事已高，长期身穿粗糙的丝绸，减少菜肴，确实不是保养身心健康，教养皇帝，安定国家的办法。
莽师群臣奏言： 陛下春秋尊，久衣重练，减御膳，诚非所以辅精气，育皇帝，安宗庙也。
Wang Mang led the ministers in memorializing that: Your Majesty is advanced in years, and for you to wear coarse silk for a long time and reduce your food – this is truly not the way to protect your physical and mental health, educate the emperor, and stabilize the country.