Ningguo is within the jurisdiction of Xuanchen City. From Beijing to Ningguo, you could take one direct train such as K101/K104 or K45 to Xuanchen first and then go to Ningguo by coach with 2 hrs. If by air to Pudong airport first and then to Ningguo, it will be very detouring. So, you could take a flight to Nanjing first and then take train to Ningguo directly. Many trains from Nanjing to Ningguo are available daily. Personally, it will be more convenient to take train directly.