Reputed to be “Heart of Ganzhong” and “the auxiliary to Chang’an (the capital city)”, Fung Cheung Region was in a significantly strategic position. In December, 757 AD, Fung Cheung was promoted administratively from City to Special Municipal City and entitled as “Xijing”, one of Five Municipalities apart from Jingzhao, Chengdu, Henan and Taiyuan. As a transport hub, Fung Cheung Region bordered to Chang’an to its east, LongYou to its west and controlled a southward passage to Xingyuan and Chengdu. Besides, its prosperous environment provided for the good development of farming and horse-raising.
This thesis analyzed and emphasized on the relations between Li Tang Empire and Fung Cheung Jiedushi (the region’s garrison commander) through its designation, evolution, composition in human resources, fortification of the national boundaries, and its contributions to quelling political unrest. The study chronicles the broad social and political changes that occurred from 760 AD (the establishment of Fung Cheung Jiedushi) to 887 AD (Li Maozhen served as Jiedushi), approximately 127 years.
During An Lushan and Shi Szeming rebellion, taking advantage of occasion, Tubo invaded the Western Regions and frequently attacked Fung Cheung Region. To defense Tubo’s aggression and to suppress the revolt, the military commissioner of Fung Cheung (jiedushi) was created in 760 AD, governing Fung Cheung and Longzhou. Under the control of Shen Ceju Army, its lieutenant sent and dispatched the military officers as jiedushi, most of them appointed later as prime ministers. From this viewpoint, Fung Cheung Jiedushi was a position that Li Tang Empire authorities valued highly of.
In the late Tang Dynasty, Fung Cheung Jiedushi played an vital role in the internal stability of Li Tang Empire and its national defense. The significance of Fung Cheung Jiedushi lay in the following cases mentioned. In the insurgency of Jingzhou, Fung Cheung Jiedushi’s assistant Wei Gao effectively contained the renegade general Li Chulin’s action. Furthermore, when Huang Chao Rebellion broke out, Fung Cheung Jiedushi Zheng-tin led the troop to victory at Lung Mei Pei, which boosted up the morale of the Tang’s army. What’s more, in assassination of eunuchs, Fung Cheung Jiedushi assisted in murdering Yu Zhaoen, dealing with “turmoil of sweet dew” and crusading against Tain Lingzi. In addition to domestic affairs, several renowned generals of Fung Cheung, such as Li Baoyu, Li Sheng, Xing Junya, successfully employed their military tactics for intimidating the foreign invaders.
Overall, all Fung Cheung Jiedushi in Tang Dynasty could perform diligently their duties and accomplished their mission. Therefore, it was apparent that this post was highly praised by Li Tang Empire authorities.