Excepting the Huangdi Neijing, most Huang-Lao texts have vanished, and traditional scholarship associates this philosophical school with Chinese classics such as Xunzi, Hanfeizi, and Huainanzi.
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However, with the exception of the medical Huangdi Neijing ("Yellow Emperor's Internal Classic"), all were believed destroyed or lost – until the recent Mawangdui discoveries.
Much of his life's work revolved around translating and adding his own commentary to an unmolested Tang Dynasty copy of the Huangdi Neijing (Yellow Emperor's Internal Classic) from an ancient script into the French language.