Kunming economic development zone. On February 25th, 20 15, Yunnan Eastern Flight Training Co., Ltd. was put into trial operation in the Economic Development Zone and became the pilot simulator training base of Yunnan Eastern Airlines and China Eastern Airlines, located in Kunming Economic Development Zone. Yunnan Province, called Yun or Dian for short, is one of the 23 provinces in China, located in the southwest of China, with Kunming as its capital.