Ningbo and Xi'an... There isn't exactly an oldest city( it's like Asking what the oldest state in USA is, they were all formed when the country was declared a country) but Ningbo and Xi'an are some of the oldest.
Beijing
the Porcelain Tower of Nanjing, the great wall of china, the forbidden city
the oldest city in the philippines is cebu city.
Turku is the oldest city
The oldest city in the Americas is Mexico City.
Australia's second oldest city after Sydney is Newcastle.Its second oldest capital city is Hobart.
taxila is oldest city of pakistanMultanlahore
oldest city is banaras
The City of Caral was the Oldest Major City
The oldest city in Florida is St. Augustine.
Damascus is the oldest city in the world.
Sault Ste. Marie, Mi. is the oldest town. The oldest big city is Detroit