SHENZHEN, July 1 (Xinhua) -- A set of three special stamps on the 10th anniversary of Hong Kong's return to China was issued on Sunday in Shenzhen, south China's Guangdong Province.

　　According to China Post, the first stamp, titled "celebration", is designed to show the successful practice of "one country, two systems" in Hong Kong. Pictures of China's national flag, Hong Kong's regional flag and Bauhinia are printed on it.

　　The second stamp, named "cooperation", shows closer economic and trade relations between Chinese mainland and Hong Kong after the Closer Economic Partnership Arrangement (CEPA) was signed. The stamp bears the letters of CEPA and pictures of Huanggang Port.

　　The third stamp of "prosperity" is made to show that Hong Kong has maintained prosperity and stability after it overcame various difficulties. The picture of Hong Kong International Finance Center is printed on it.

　　The price of the stamp set is 3.9 yuan (0.51 U.S. dollar).

　　On the same day, Hong Kong Post also released a special stamp on the 10th Anniversary, with the same design as the "celebration" stamp of China Post's set. The price of the stamp is 1.4 HK dollars.