Hongdao is also a famous salt-producing area. Jiaodong's "boiling the sea to get salt" began in ancient times. The name of "Luyan" is superior at home and abroad, and "Hongdao Salt" is also the leader of "Luyan". At the end of Yuan Dynasty and the beginning of Ming Dynasty, the ancestors of Hongdao continued to move in, and the salt industry on the island began to develop. An "ancient salt well" unearthed in Hanjia Village was identified as a salt well site in Wanli period of Ming Dynasty (1579). "Shandong Salt Industry Records" contains: "1908 (thirty-four years of Guangxu in Qing Dynasty), people in Jony J Village, Yindao, Jiaozhou Bay learned the method of drying salt from Jinkou and went back to the village to try it out. It is the beginning of the modern JIAOZHOU bay beach drying salt. "Jiaoao Salt Industry" records: "In the early years of the Republic of China, Jiaoao salt flats developed day by day, and there were more than 90 pairs of buckets around Yindao, producing 6.7 million tons of salt, which were mostly sold to North Korea, Hong Kong and Vladivostok. "Wu Boxiao, a modern writer in China, visited Yindao on July 3rd165438 and wrote the article" Fishing for Salt in Yindao ",which described in detail the history of fishing for salt in Yindao, the method of" opening a beach to dry salt ",the salt piles like hills and the output, and said that" the sea water is inexhaustible, and the salt is inexhaustible. "