Does Shanghai make money by selling seafood?

1. There is a big market demand. The living habits of Shanghainese determine a great demand for seafood. Shanghainese like to eat seafood. If there is a big demand, there will be a big market demand, and if there is a big market demand, they will make money.

2. The profit of seafood is very high. Take a crab as an example. The cost of taking this crab out of the sea and transporting it to the store only accounts for 5% of the crab's selling price. The profit of other seafood is about 5%. If it is profitable, it will make money.