There's no single author for "The City God" as it's a concept, not a written work. However, there are many folklore stories, myths, and religious texts that discuss the City God and their role in Chinese society.
These stories are often oral traditions, passed down through generations and varying in specifics depending on the region.
If you're looking for specific texts about the City God, you might want to search for:
* Local temple records and historical accounts
* Folklore collections
* Scholarly works on Chinese folk religion
It's important to note that the City God is not a single deity but rather a broad category encompassing various gods, spirits, and historical figures who are believed to protect and guide a particular city or region.