The Analects of Confucius. Zi Zhang, "Zi Gong said, '... ... Master of the wall a few yards, not enter, but no ancestral beauty, the King of the rich
"The Analects Zi Zhang": "Zigong said: '... ... Master of the wall a few yards, not enter, but no ancestral beauty, the King of the rich.'" Knowledge of the Confucian ethics as described Zigong high, after the "Master wall" metaphor virtuous person unattainable. Tangliu Zong Yuan "public 50 offer Hongnong Rhyme": "rude people abandoning the country alone is difficult to peep Master wall."