《史记·十二本纪·夏本纪》
每日严肃地恭敬实行六种品德，认真辅佐王事，诸候就可以保有他的封国。
日严振敬六德，亮采有国。
If you can solemnly and respectfully practice six of these virtues every day, and earnestly assist the king in his duties, the vassals can keep their fiefdoms.