Ask a question about the geography of China, (boring)

In ancient times, there was an official road in Sichuan called "Xia Chuan Road". Later, Xia Chuan Road was divided into four parts, and then this place was called "Sichuan", which means "Xia Chuan No.4 Road". B. In the first year of Chongning, due to Zhao's authoritarian rebellion, the court thought that "Chongqing" meant "change" and changed Yuzhou to. In the first month of the sixteenth year of Xiaozong, Prince Zhao was made King Gong. In February, he was given a position by Neichan, boasting of "double happiness", so he upgraded Duke Zhou to Chongqing Prefecture. C, Taihang Mountain. D. Dongting Lake E. "Guangdong and Guangxi" are the general names of Guangxi and Guangdong. In ancient times, official roads were set up in Guangdong and Guangxi, which were called "Guangnan Road". Guangnan Road is divided into two roads, one is called "Guangnan West Road"-Guangxi, and the other is called "Guangnan East Road"-Guangdong. So Guangdong and Guangxi stayed. F. the yellow river. Zeng H, known as "the most eastern city in China", is the Oriental Pearl. But geographically, what people call "the easternmost city in China" is Heilongjiang. In fact, in ancient China, there was a city called Xijing, which is now Xi 'an. At that time, it was thought that in the Han Dynasty, Chang 'an was the capital of the Western Han Dynasty and Luoyang was the capital of the Eastern Han Dynasty to distinguish the two capitals. Chang 'an is called "Xijing" and Luoyang is called "Tokyo". I still don't understand. When you say paired vertical equidistant, can you guarantee that it is both vertical and equidistant? I mean Shanghai, the photos I took: