A visitor appreciates zodiac stamps in the Suzhou Zodiac Stamp Museum in Suzhou, East China's Jiangsu Province, May 15, 2013. The museum, which will be opened to the public free of charge on May 18, stores zodiac stamps which were issued in more than 100 countries and regions since 1950. (Xinhua/Wang Jiankang)

 Visitors appreciate zodiac stamps in the Suzhou Zodiac Stamp Museum in Suzhou, East China's Jiangsu Province, May 15, 2013. The museum, which will be opened to the public free of charge on May 18, stores zodiac stamps which were issued in more than 100 countries and regions since 1950. (Xinhua/Wang Jiankang)

A visitor appreciates zodiac stamps in the Suzhou Zodiac Stamp Museum in Suzhou, East China's Jiangsu Province, May 15, 2013. The museum, which will be opened to the public free of charge on May 18, stores zodiac stamps which were issued in more than 100 countries and regions since 1950. (Xinhua/Wang Jiankang)