Is it expensive to travel to Dongtou seaside in Wenzhou alone? How much does it cost to eat seafood and stay? What should I pay attention to? Is it dangerous?

Danger is not dangerous, my Lord. Seafood is cheap depending on your consumption standard. It is estimated that you can eat 100 yuan, but you don't have to eat seafood every meal. If you find a suitable and safe place to live, go directly to the place where you live. The shopkeeper can also give you some advice, but the accommodation is not very cheap. If the economy is relatively affluent, recommend a member of Dongtou 18 Mansion and Inn Gang. But the price is really not low.

Further reading: How to buy insurance, which is good, and teach you how to avoid these "pits" of insurance.