Li Zheng-ji, who was a Goguryo migrant, entered on the stage during the suppression of The Rebellion of An Lu-shan. Li set up his cousin Hou Hsi-i as the I-qing-chieh-tu-shih in Qing-chou. Hou was afraid of his Li’s leadership and tried to eliminate...
Li Zheng-ji, who was a Goguryo migrant, entered on the stage during the suppression of The Rebellion of An Lu-shan. Li set up his cousin Hou Hsi-i as the I-qing-chieh-tu-shih in Qing-chou. Hou was afraid of his Li’s leadership and tried to eliminate Li Zheng-ji. However, Hou was banished by soldiers, and consequently, Li became a I-qing-chieh-tu-shih. Li died during his fight in cooperation with other chieh-tu-shihs against T’ang. After that, the position of I-qing-chieh-tu-shih was bequeathed to Li Na, Li Zheng-ji’s son. Later, Li Shi-gu, Li Na’s son, inherited that position. After Li Shi-gu died, his half brother Li Shih-tao labored to confirm the position from T’ang. Meanwhile, T’ang tried to conquer Li Shih-tao, attacking his territory from three sides.
The fact that the position of Hai-yun-lu-yun-chia-Silla-Pohai-liang-fan-shih was monopolized by Lee’s family is an important key to the interpretation of the history of Korea-China relationship. In other words, it is a clue to prove the active trade between T’ang and Shilla or T’ang and Balhae around Shan-tung Peninsula from the late eighth century to the early ninth century.
After the collapse of Lee’s family’s control of Shan-tung Peninsula, pacification of that area was beyond T’ang’s power. Probably, considerable number of Shilla’s 30,000 soldiers who had been mobilized by Tang’s request for the suppression of Li could have remained in Shan-tung area. As a result, a full-scale settlement of Shilla people was established around Shan-tung Peninsula. Therefore, it can be assumed that the foundation of Jang Bogo’s marine network was set up with the appearance of Lee’s family.