The evolution history of administrative region names in China is very complicated, and it is very common that the names of secondary administrative regions and tertiary administrative regions are replaced with each other. For example, Nanchang and Zhang Yu, which I answered, were a county when Zhang Yugang founded the city, and Nanchang was a county. But later, it became the government in Nanchang and the county in Zhang Yu. There is a principle: whether this administrative name has always existed. For example, Chang 'an, Hefei and Licheng have always existed as county names. At this time, we can't give ancient place names just because the names of prefecture-level cities are different now. Change? Yes
As for Shijiazhuang, people are not in Zhengding County, but in Huolu County. Why should it be named after Zhengding? What's more, the new city is named Zhengding and the old Zhengding county? Demolition or renaming? At that time, I'm afraid someone will ask in Zhihu: Why does China always give the new town a historical place name? There is a historical basis, but it can only be concluded that the current names have origins, and the final conclusion of each part is double-marked, such as the appearance in the morning and evening, such as the size of administrative divisions.
Just like in history, Xuzhou is the most easily mistaken one in the Romance of the Three Kingdoms, because of the various transposition of the government name and location of a city. Names are changed according to the needs of the times. The task of a city is development, and it is a place where people work and live together. The role played by names is sometimes an advantage. Why not change Shijiazhuang into Changshan and Zhending, which can play a catalytic role in urban development?