你收到过一座城市的来信吗？

Have you ever received a letter from a city?

6月25日，北京朝阳向世界发出五封信

On June 25, Beijing Chaoyang sent five letters to the world

信里装满了“五区”发展的蓝图

each outlining a development blueprint for the "Five-role District" 

也藏着一句盛情邀约