Simplify the following text for a Grade 10 native English-speaking person.
Original: Nanjing is also one of the fifteen sub-provincial cities in the People 's Republic of China 's administrative structure , enjoying jurisdictional and economic autonomy only slightly less than that of a province .
Simplified: Nanjing is also one of the fifteen sub-provincial cities in the People 's Republic of China 's administrative structure . It has autonomy for jurisdiction and economy only slightly less than that of a province .