2. The mullet eggs are unique treasures in Donggang District. The output of mullet eggs in Rizhao is about 5-8 tons, and the output in 1992 is 20 tons, which are mainly sold to Beijing, Tianjin, Shanghai and other places.

3, mullet eggs, with a long history, are well-known at home and abroad, and are said to be the best food for feudal emperors. The mullet egg is made from the egg-wrapping gland of the special squid in Rizhao. It is milky white and egg-shaped, and can be processed into high-grade food that looks like petals and is as thin as paper. According to "Rizhao County Records" in the fifty-fourth year of Kangxi in Qing Dynasty, "Squid fish has eggs in its mouth, which is one of the eight treasures in the sea". To the end of the Qing Dynasty, mullet eggs were always listed as tributes.