During the Three Kingdoms period, was the Western Region Cao Wei's territory?

Although Cao Wei set up a captain of Wuji in Gaochang and a long history of the western regions in Loulan, he could not actually control the western regions.

After Cao Wei replaced the Han Dynasty, the situation of the north-south road in the western regions was as contained in the biography of Wei Lue Xirong:

Southbound, as well as Zhiguo, Xiaowan, Jingjue and Loulan are all good. Ronglu, Bai Weiling, Qule and Pishan all belong to this country. Zhou Weiguo, Xu Weiguo, Yanqi, Gu Mo, Wensu and Weitou belong to Qiuci, China, shache, Keshi, Qusha, Xiye, Yinai, Manzhou and Yiruo. ..... Beixin Road westbound, east and the United States, west and the United States, Shan Huan, Biluguo, Puluguo and Wukong, all belong to the rear of the car division.

It can be seen that although Cao Wei set up a captain of Wuji in Gaochang and a long history of the western regions in Loulan, he was unable to control the western regions.

According to the History of the Three Kingdoms, Shu Wei, Wu Wan's Biography of Xianbei to the East and the Record of Wendi, it can be known that Qiuci, Shule, Shanshan, Che, Yanqi and Wei Xu were all big countries except Wei Xu. In other words, the tribute record is very consistent with the record in the biography of Wei Luxi Rong about the oasis power of the North-South Road and the service for the nearby small countries at that time.

It should be pointed out that, compared with the description of a big oasis country and a small country nearby on the north-south road quoted in the preface to the biography of the western regions in the later Han Dynasty, the description in the biography of Wei Luxi Rong is mainly different in that it does not mention that the small country, which is also a servant, later regained its independence. Of course, this is not an accident, but a proof that the situation of oasis forces in the north-south road has not changed until the demise of Cao Wei.

In fact, the dominant position of the oasis forces in the North-South Road, which began at the end of the Eastern Han Dynasty, did not change throughout the Cao Wei period, nor did it fundamentally change throughout the Jin and Southern Dynasties.