His father Li Xiaojie (李孝節) served as the secretary general of Gu Prefecture (穀州, part of modern Luoyang, Henan) during Sui's succeeding dynasty Tang Dynasty.
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Li Jingxuan (李敬玄) (615–682), formally Duke Wenxian of Zhao (趙文憲公), was an official of the Chinese dynasty Tang Dynasty, serving as chancellor during the reign of Emperor Gaozong.
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Late in the reign of Emperor Taizong, the chancellor Ma Zhou, knowing Li Jingxuan's talent, recommended him to be a resident scholar to study with Emperor Taizong's crown prince Li Zhi.