Colored windmills form the shapes of the Chinese national flag and map, together with four Chinese characters reading "China flourishes" in Beijing's Miyun district on Thursday. Red, orange, yellow, green, cyan, blue and purple windmills were hung in the air or planted in fields for the first Windmill Cultural and Tourism Festival, which will last until May. Photo: CFP

Colored windmills form the shapes of the Chinese national flag and map, together with four Chinese characters reading "China flourishes" in Beijing's Miyun district on Thursday. Red, orange, yellow, green, cyan, blue and purple windmills were hung in the air or planted in fields for the first Windmill Cultural and Tourism Festival, which will last until May. Photo: CFP