Jiangsu Gaoyou Every year before the Ching Ming Festival, local people pick up duck eggs and pick them up after one month. The salted duck eggs after cooking are red and oily. "I don't know Gaoyou, the prophet Gaoyou egg", "The sun and the moon in the sky, Gaoyou duck egg double yellow." Double yellow egg as the image ambassador of Gaoyou, since ancient times, it has been a tribute to the court and a famous native product for gifting relatives and friends. More than 900 years ago, Qin Shaoyou, a famous poet in the Northern Song Dynasty, once gave his teacher a friend with duck eggs. According to records, as early as the Qianlong period, Gaoyou salted duck eggs have become treasures on the table. In the 31st year of Guangxu Emperor Guangxu (1905), the first egg company in Gaoyou, Yuyuan Egg Factory, was released. In 1909, Gaoyou Shuanghuang duck egg participated in the Nanyang Persuasion Association Chen赛 and won the international famous reputation. In the following year, it was exported to more than 10 countries and regions such as the United States, Japan, Singapore and Malaysia.