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Books about Chengqi:
Chengqi soups side of modern research and application by WU XIAN ZHONG ZHU (1991)
Wang Chengqi microsurgery(Chinese Edition) by WANG CHENG QI ZHU (Apr 1, 2009)
Wiki information Chengqi:
Li Chengqi, known as Wu Chengqi during the reign of his grandmother Wu Zetian and as Li Xian after 716, formally Emperor Rang, was an imperial prince of the Chinese dynasty Tang Dynasty who served as crown prince during the first reign of his father...
Li Chéngqián, courtesy name Gaoming, formally Prince Min of Hengshan, was a crown prince of the Chinese Tang Dynasty. He was Emperor Taizong's oldest son and first crown prince, but was replaced later by his younger brother Li Zhi. Li Chengqian was...