Which part of China did the Governor City refer to in the novel?

" I Have a City in the Tang Dynasty " is a historical novel written by the author, Hong Dongdong. The general plot of this novel is as follows: There was such a city in the Great Tang! It did not have walls to defend it, but it was the safest place in the world! The shops here had countless treasures that surpassed this era! The medical treatment, education, and entertainment here all led the world! The residents here must be elites in various fields! The king of a certain country had to give up his territory to buy an apartment here! This was the economic center of the Great Tang. It was also the economic center of the entire world! And its owner owned 80% of the world's wealth… ---------------------------- " Being a Town Security in the Later Tang Dynasty " was a historical novel written by the author, Nishang Ruoyun. The general plot of this novel was: Unexpectedly, while he was on duty, he was struck by lightning and returned to ancient times from modern times. He did not know what happened… ---------------------------- " The First City in Troubled Times " was a historical fiction novel written by the author, Demon Land. The general plot of this novel was: Young Master, shall we follow the Crown Prince on his southern hunt?" "No, the Crown Prince is mean and ungrateful. It's not worth it!" "Young Master, what are we going to do?" " Be a warlord!" To be a warlord and reorganize the world. He would build a towering giant city that would be prosperous for thousands of years! ---------------------------- " Ming Dynasty: I Transport Materials from the Modern World " was a historical novel written by the author, Wideback. The general plot of this novel was: Obtained a two-way space-time portal that allows one to travel between the late Ming Dynasty and the modern era. He would first plan from the capital region and obtain an opportunity to transfer to the Nine Border Town to control a small city. Therefore, while building a supermarket supply chain in modern times and secretly transporting supplies to the end of Ming Dynasty, he also carried out large-scale construction in the border areas, developed his power, and dominated the world before expanding overseas. In the end, his identity was exposed and he used the resources of the late Ming Dynasty to support modern time and space. ---------------------------- Yi Tang was a historical novel written by the author, Duke Wei. The general plot of this novel was: Liu Yi is Liu Fu. In the fifth year of Taihe in the Great Tang, danger lurked everywhere. There is a clique struggle between Niu and Li in the court, the military towns are divided, and the eunuchs monopolize power. Outside the court, there are Tubo Huihe people, encroaching on Hehuang area, covetous. Behind the facade of peace, no one had expected that the surrender of a city would lead to a conspiracy that shocked the empire. Cunning, vendetta, betrayal, factional strife, hidden plots…Loyalty, sincerity, hot-bloodedness, integrity, courage…From the Minshan Tundra in the southwest border to the treacherous Chang 'an Imperial Court, from the flourishing Chengdu Prefecture to the magnificent Daming Palace. An advisor without any official rank, a Tang minister who controlled the military town, a military lord who lived in the royal residence…Everyone was a chess player, and everyone was a chess piece. Let's see who will have the last laugh… ---------------------------- " The Supreme Military God of the City " was a novel about urban life written by the author, Old Zhang. The general plot of this novel was: How could a great country be a child's play? In the east, there is a town general called Dayan Pass, which became famous in one day and turned into yellow soil. In the west, he sat on the python dragon to capture the evil thief, but his achievements were not successful and his reputation was not established. Nanshou was in charge of the Dragon Claw Army. He cut through the mountains and protected the south gate. Go North to the Sirius Star in the sky. The evil star comes out of the road and blocks the northern fortress. During this period, a child said," All of you are heroes, true men who protect the country. My son has an order to take control of Ce Bei's army!" ---------------------------- " Stubborn Thief " was a historical novel written by Duolu Hou. The general plot of this novel was: In the second year of Chongzhen of the Ming Empire. The once-powerful empire was about to collapse. There are Yinchuan post soldiers in the palace waving their arms and spears, and the nine states are split apart. Outside, there was a new lord of Jianzhou who led his troops into the pass. In the drought that swept through Shaanxi, Liu Chengzong strode forward with his head held high. ---------------------------- " I'm Building the Great Wall in the Great Qin Dynasty " was a historical novel written by the author about the stress of life. The general plot of this novel was: He was in Great Qin, his home was in Xianyang, and he had tens of millions of acres of fertile land. He had transmigrated to Great Qin and became a playboy, living a carefree life! ---------------------------- " The Princess of a Great Country " was an ancient romance novel written by the author, Xin An Zening. The general plot of this novel was: Princess Ding Cheng's mother died early and she lived in the palace. She wanted to live a peaceful life but things did not go as she wished. One day, a young master robbed her courtyard and her country. She realized that she had lost her heart and fled the palace in a sorry state. After that, a young master of Ding City appeared among the people. It is said that the son of Dingcheng collected soldiers and bandits, built a city wall, fought bandits in front of him, and attacked other countries behind him. He was very talented. Some people say: Dingcheng Gongzi's demeanor, I do not know who can match him; There were also people who said that Young Master Dingcheng was actually a woman… When she became "him", her name shook the world, dazzled the eyes of all the young masters and young ladies, and the Imperial City was in turmoil… [Small Theater] "If this child has the same personality as you, then it'll be bad. He looks like he's easy to bully!" "If I didn't do this, he wouldn't exist." Chu Li chuckled. Dingcheng: "…" What do you mean? ---------------------------- " Cloud City " was an ancient romance novel written by the author, Squat and Don't Move. The general plot of this novel was: The story began on a confusing day, the Shangyuan Festival. Yun Qiancheng, who was about to ascend to the throne, was dragged down from the Nine Palaces! Then he was sent to the border and enslaved with the armored man. Then, he…met the powerful Jinyiwei. The plot is fictional, please do not imitate it.