Li Hong
During the middle part of the "Yonghui" era of Emperor Taizong's son and successor Emperor Gaozong (650-656), Yao Shu passed the imperial examination and was made a secretary at the mansion of Emperor Gaozong's crown prince Li Hong. While serving there, he participated in a compilation work commissioned by Li Hong, the "Yaoshan Yucai" (瑤山玉彩), and after the work was completed, he was made "Mishu Lang" (秘書郎), a secretary at the Palace Library. During Emperor Gaozong's "Tiaolu" era (679-680), he was promoted to be "Zhongshu Sheren" (中書舍人), a mid-level official at the legislative bureau of government (中書省, "Zhongshu Sheng") and created the Viscount of Wuxing.