kunming! it's the garden city of china,worth visiting it! nanjing is located in the middle part of china,but kunming is southern city,you will spend about 3 hours from nanjing to kunming by plane.
thanks for your suggestions!nanjing is big city with long history.here,there are many old buildings for several hundred years ,if you come to china,nannjing is one of the most valuable places u should go to!