Nanyang here refers to Nanyang County, not Wancheng. In the History of the Three Kingdoms by Chen Shou, Wancheng is Wancheng and Nanyang is Nanyang County. There is no mixture. Of course, if someone finds out that Nanyang also refers to Wancheng and Wancheng also refers to Nanyang, then you can reply. For example, when stationed in Wancheng, Cao Cao and the battle of Wancheng only said "Wan".
Longzhong belongs to Deng County, Nanyang County, twenty miles west of Xiangyang City. Longzhong obviously belongs to Nanyang county, so Zhuge Liang's loyalty to Nanyang is also suitable for Longzhong's statement, which is not favorable evidence for Nanyang's statement, that is to say, this evidence can't prove Nanyang's statement, and of course it can't prove Longzhong's statement, just proving that they are all in Nanyang county.
Some people think that Nanyang County and Nanyang County are bounded by Hanshui River. The evidence is that in the thirty-fifth year of Qin Dynasty, that is, in 272 BC, Nanyang County was located in the north of Hanshui River and Longzhong was in the south of Hanshui River. These people think that Longzhong can only belong to Nanjun, not Nanyang.
There are several problems with this statement. First, in the thirteenth year of Jian 'an, it was already 208 AD, which means that it has been 500 years. Will the boundary between the two counties remain unchanged for 500 years? Isn't the administrative area of each county the same? If nothing changes, how did the 36 counties in the early Qin Dynasty become 100 counties in the Eastern Han Dynasty?
Some people think that Longzhong is a flying block, and it is impossible for Nanyang County to cross the Hanshui River and own Longzhong. This is a matter of course. In fact, Wudang County, Du Shan County, Zhuyang County, Zan County and Du Shan County are all ruled by rivers. If nothing else, many counties and cities, rivers and rivers pass through the middle of the city. Do cities and cities have to be bounded by rivers?
Others took out the models before and after Yue Fei's calligraphy as evidence, which was even more untenable. Yue Fei did not write this model to verify Zhuge Liang's cultivated land, even if Yue Fei was in Chengdu, Langya County and Dingjun Mountain, even if he was at home. This is just to express his feelings.
In addition, Su Dongpo's famous poem "Niannujiao Chibi Nostalgia" is not in the real place of Battle of Red Cliffs at all, but in another place, so there is a distinction between Wenchibi and Wuchibi.
Some people take ancient trees or ancient inscriptions as evidence, which is even more meaningless, because these were not Zhuge Liang's things at that time. What's the point? If we want to talk about folklore or literati writing, The Romance of the Three Kingdoms is even more famous. To be clear, it is the west of Xiangyang city and Wollongong in Longzhong.
In addition, there is a famous example about Nanyang County and Nanyang City, that is, Liu Xiu's hometown is now in Zaoyang City, Xiangyang City, not Nanyang City, and this place belonged to Nanyang County in the Han Dynasty, so it was not in Nanyang County before, and now it must be in Nanyang City, and vice versa, because Nanyang County has been changing and it is not completely coincident with Nanyang City now.