《资治通鉴·汉纪·汉纪一》
张良体弱多病，未曾独自领兵打仗，而是经常作为出谋划策的谋臣，时时跟随在汉王身边。
良多病，未尝特将，常为画策臣，时时从汉王。
Since Zhang Liang was weak and often ill, he did not command troops in battle, and served as a strategist and was always by the side of the King of Han.